SB Nation Detroit Editor's Pick
A Note on Robbie Hummel
[FanPosts that get linked by ESPN.com get bumped. -KJ]
There's no question that the season-ending injury to Robbie Hummel is a disaster for college basketball. It's a different question whether it's a disaster for Purdue's Big Ten and National Championship hopes. There has been much dramatic rewriting of pre-season rankings in the days since Hummel's injury. For example, Andy Katz dropped Purdue from #2 all the way to #23. In response to this furor, Ken Pomeroy has weighed in with the appropriate observation that no one player, at least no one player in college basketball today, would make the difference between #2 and #23 to a team. This is a significant point: the importance of a single player is often overstated in team sports, but especially basketball. TOC's home-grown PORPAG measurement is an appropriate metric to bring in here, as it attempts to measure how much more per game a player contributes on offense than the average player who would replace him. Although PORPAG does penalize a player for time lost to injury, Hummel missed only a handful of games last year so it should be a fair measure of his value to the team on offense. PORPAG saw Hummel as the third most valuable player in the conference at 3.75 points per game above replacement level in conference play. So he meant roughly 4 extra points per game for Purdue. That is significant, definitely, but probably not the difference between national championship contention and not making it out the first weekend of the tournament.
At the same time, I completely understand the pessimism about Purdue's chances as well. If there's anyone whose contributions were not fully captured by any one metric, it has to be Hummel. As impressive as Hummel's numbers were, he was also clearly the glue that held Purdue's parts together. He played tough defense of course (3rd on the team in block and steal %, second in DR %), got on the glass at both ends (6.3% OReb), hit timely threes (36%), made good passes (15.2% ARate) and had a ridiculously low 8.6% TORate. As if all that weren't enough, he shot 90% (!) from the line. (All stats from KenPom.com.) He was just crazy good. And he was clearly a team leader, with the respect and admiration of his teammates. He was my pick for Big Ten POY this year as soon as it was clear he would be back. As a case in point, with Hummel out last year Purdue perpetrated two of the most horrific offensive abominations I've ever witnessed in losses to MSU (0.69 PPP) and in the Big Ten tournament to Minnesota (0.63 PPP). With all of that, however, they managed to get it together enough to beat noted bracket-buster Siena and a solid Texas A & M team to reach the Sweet 16. They even hung with eventual champions Duke for a half. And all of this happened with very little time to adjust to playing without Hummel. That, to me, is the biggest difference between this year and last. They'll have a few weeks plus a very soft non-conference schedule to get their roles set and schemes in place for the conference and post-conference seasons. They have a very solid incoming class, featuring 4-star guard Terone Johnson, and current players like Patrick Bade, Travis Carroll and Sandi Marcius are ready to expand their roles. With these guys, a reportedly much stronger JaJuan Johnson and the excellent Moore to absorb the load, I expect Purdue to get better than replacement level production to fill the Hummel void. They're not in my top 5 any more, but I can't see dropping Purdue out of the top 15.
As a postscript, it looks like Hummel will redshirt this year, enroll in graduate school and return for the 2011-12 season.
This is a FanPost, written by a member of the TOC community. It does not represent the official positions of The Only Colors, Inc.--largely because we have no official positions.
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Good post
Two (countervailing) points:
1) You can argue that Hummel’s PORPAG number is too high as an estimate of the loss to Purdue’s offense, since Purdue has enough depth now that they won’t be replacing him with a “replacement-level” player. (Of course, the absence of his defensive rebounding abilities will hurt some on defense, too.)
2) Dan Hanner’s projection model actually says the loss of Hummel will cost Purdue slightly more than Katz says it will.
I tend to agree with Katz/Hanner here. Hummel is just so darn efficient, and IMO he adds a lot not captured in the numbers (as you note). In particular, I think he keeps the offense in balance with his passing skills, preventing one-on-one play from Johnson and (to a lesser extent) Moore. To take Pomeroy’s thought experiment and tweak it just a bit, I think adding Hummel to this year’s Minnesota team just might make them Final Four-quality.
Still, you’re quite right that Purdue will have more time to adjust to Hummel’s absence this year. And it’s quite possible that Matt Painter can find a new balance on offense with the freshmen now on board and last year’s freshmen now sophomores.
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 10:03 AM CDT reply actions
Another way of looking at it
If you adjust Purdue’s numbers for Hummel not playing this year, they drop down near Butler on this scatterplot:

Katz has Butler at #18. Gary Parrish says #19. Jeff Goodman says #23.
So somewhere between #15 and #25 seems reasonable.
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 10:44 AM CDT reply actions
I see your point
Another thing to keep in mind, however, is that the guys other than Hummel that they’re losing played a pretty small role in the offense (in the case of Kramer, extremely small – 13% usage rate). So this may overstate the lack of returning minutes. Gasaway had a metric called returning possession minutes that attempted to qualify returning minutes by usage rate. It would be interesting to see how Purdue looks on that graph. I’ll see if I can put that together.
I'd note that Hanner's model accounts for returning stats on offense/defense
(rather than just minutes).
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 12:00 PM CDT up reply actions
Ha. Will bump to our front page now.
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 11:59 AM CDT up reply actions
Nice!
Tonight's going to be a good night.
by Spartalytical on Oct 19, 2010 12:11 PM CDT up reply actions
A not-really-related-to-the-post question
Is Hummel going to be able to be an effective player again? I’m don’t know if this injury is a case of coming back too soon, a random freak occurrence, or a harbinger of horrible unfixable structural damage. Is this more a one-year problem or a career ender?
Valid question
I’m no doctor but his original tear sounds pretty serious. They took a graft from the patella tendon in his other leg to repair the damaged ACL. I have to think that makes it more than your average knee injury, but obviously that’s merely an uninformed impression.
I believe that's just the preferred method for ACL reconstruction now.
Theory is it’s easier to rehab both knees at the same time than making the injured knee even worse by removing a tendon from it.
It’s impossible to say, but if it holds up I think he’ll be okay. Of course, he’ll probably have an increased risk to tear it again after two surgeries.
I agree
This isn’t a career ender, each tear is a separate event, to be evaluated seprately, to a certain extent. But being the second occurrence, you have to imagine it will take longer to get strength and conditioning back to 100%, if ever. I feel sorry for Hummel because he will return for his senior year and play with a relatively depleted Purdue roster. Not to take away from the guys beyond Johnson & Moore.
More from Hanner on this topic.
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 1:43 PM CDT reply actions
A Loss for the Big Ten
Just when I felt it was looking like a good year for the Big Ten in both Football and Basketball.
I think MSU, OSU, Iowa and Wisconsin will represent well in bowl games, and was feeling that MSU, Purdue and maybe OSU or Wisconsin had a chance to look good in the tournament. I’d love another year with 2 Big Ten teams in the Final Four (MSU being one of them, of course), but I’m not so sure that’s going to happen this year.
I have already forgotten the name of Purdue’s defensive stopper, hustle player who graduated, but the loss of the two of these guys (instead of just one) makes Purdue a lot less of a threat. I was going to be happy with a split, now I want 2 from Purdue.
MSU should have no more than 3 losses in conference now – @ Wisconsin, @ Purdue or OSU and that random unpredictable loss.
Preseason rankings
I would have to think that a drop in preseason rankings, which really are 100% opinion, can warrant a drastic drop in rankings, but regular season rankings which are based on in game performance, would not effect it until one sees a visual change in live competition. losing Kalin Lucas for the season would drop MSU’s real chance from top five team to 10-15 instantly. I would view Purdue as less deep than MSU, thus Hummels value lost would be greater.
A bit thick with the Hyperbole, no?
My feelings on Purdue have been noted before but seriously:
There’s no question that the season-ending injury to Robbie Hummel is a disaster for college basketball.
I’m not quite sure that anybody but Purdue/fans/alums really cares about this injury anymore than they cared about Kalin Lucas’s injury in the tourney last year or say Kenyon Martin’s in 2000, etc. Injuries are part of the game. You always want to beat the best, at their best, but all teams, schools etc. deal with injuries on a regular basis.
Purdue has three guys who acted unselfishly and returned for their senior season to win a title(s), for that they should be commended, but injuries happen. This isn’t the first time for Hummel, so it’s not a “freak” thing but an instance of depending on a player who does not have the body to withstand major college athletics. It’s akin to us “depending” on Delvon Roe then acting shocked if he suffers a season ending injury. He was injured when he started his career here and has been injured every season (playing gamely, I might add!) he has been here.
Second: As far as (as noted on Hammer and Rails) Hummel being their best player: Is that because the team he plays for is in Indiana and (I really hesitate to say this because I haven’t seen anything to suggest that H&R or TOC think this) he’s white? Statistical analysis above points to him as the THIRD best player on Purdue. Everything I’ve seen points me to Moore and Johnson being potential NBA regulars. Hummel…might get a shot. Moore and Johnson came back. Hummel injured or not wasn’t a legitimate early draft candidate.
Last: Are my eyes deceiving me? Is KJ, who I have always pictured as a Bill James disciple acknowledging “intangibles”? That Hummel may provide more than “just” his stats to the team. That something as ethereal as “chemistry” actually exists?
Intangibles
They exist; they’re just hard to measure. In this case, we actually have a quantifiable reason to think they exist: When Hummel got hurt last year, Purdue’s efficiency dropped more than just the removal of his stats would have predicted. (Again: They’ll have more time to adjust to his absence this year.)
How does statistical analysis point to Hummel being the third best player on the team? His offensive rating was 15 points higher than Johnson’s and almost 20 points higher than Moore’s last year (with only a slightly lower usage rate).
Finally, I consider Hummel’s injury a blow to the game because he’s such a joy to watch in terms of how fundamentally sound his play is. Hopefully, we’ll still get another year to watch him, but it’s likely to be on a less lofty stage.
Fight for The Only Colors: Green and White!
by KJ@theonlycolors on Oct 19, 2010 3:51 PM CDT up reply actions
Reading! It's fundamental.
I saw this:
PORPAG saw Hummel as the third most valuable player in the conference
and read team instead of conference. Doh!
Anyway, still dislike Purdue hoop, and would rather win and beat them at full strength so they can’t make excuses. I never want to see a player get injured, speedy recovery to Mr. Hummel.
The worst part is that I was really looking forward to getting a chance to break the 3-3 deadlock with you guy from the last 3 years.
Now if it happens it’ll probably only be in one direction and won’t mean as much. But oh well. By the way, how the heck have we not met in the BTT.
Easy - because we suck in the BTT and Purdue doesn't
Tonight's going to be a good night.
by Spartalytical on Oct 20, 2010 6:47 AM CDT up reply actions
LOL
Intangibles: They exist; they’re just hard to measure.
Good stuff.
Totally agree though. It sure seems like Purdue lost something more than the pure subtraction of Hummel’s stats. It’s a domino effect that changes how the whole team functions both in execution and psychology. To the last point, it’ll be a lot easier to adjust to a season without Robbie than have him snatched away right before the tournament starts.
Hummel's PORPAG is just 4 PPG...
But that says nothing of his defense as well. He’s a phenomenal rebounder, which that alone is worth a certain amount of points. Kick in ability to guard in there as well, and Hummel’s PORPAG, in my opinion, is probably at least 5-8 PPG – I think he’s that important defensively to what Purdue does.
Dan Henner just had a nice retort to Pomeroy’s article and I agree with Katz/Henner, here.
My Michigan State (and Big Ten) Baseball Blog.
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Here's the Henner piece I mentioned above.
Here.
I didn’t realize how good Temple was last year.
My Michigan State (and Big Ten) Baseball Blog.
Like music? See what I'm listening to at my Last.fm account.
I'm no tempo-free expert...
I defer to the gentlemen who run this site who are. I think the Hummel loss hurts Purdue most on the boards-they aren’t a good rebounding team anyway, and losing him and Kramer hurts them badly in that area. He’s also basically a point forward, they facilitate a lot of the offense through him. They now are tasked with getting the ball to two stars without the help of a strong offensive point guard (Jackson is often a spectator on offense). And without Hummel, Johnson spent much of his time wandering the perimeter jacking 18 footers.
As Izzo has said, there are probably 8-10 teams who can win the national championship. I think it’s too much to expect of Purdue to be one of those ten without Hummel. They have to remake themselves, and while they have a season to grow into it, they are pretty limited in some key areas.
Basically, losing Hummel means Purdue needs 2 guys to fill his shoes.
One defensively, one offensively.
My Michigan State (and Big Ten) Baseball Blog.
Like music? See what I'm listening to at my Last.fm account.

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