Amen!, +1, Co-sign, truth, especially your last sentence
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This is why I doubt you and Hamcoboiler see your wishes..and it is strictly a guess on my part, but a reasoned guess. First coaches are not idiots...even if some are ...there will be some on the bench that are not. Coach Beilein is a great offensive coach. If you switch everything, then no doubt you give a great advantage to the team that forces a switch unless all five defenders are of similar capabilities...Like Louisville when they won it under Crum. Purdue had PJ on a big a couple of times in the lane and MIchigan did NOT take advantage of it, but will this time. I would be shocked if Purdue plays Michigan and Michigan has not talked about the options if Purdue switches all the time. I would expect that to be a disaster in the next game, but perhaps Beilein...Meyer...others are not as smart as I give them credit.
That said I can see Biggie and Vince switching everything and Cline and Dakota doing the same. I can even see the possibility of all horizontal screens being switched (guard to guard, forward to forward or center) and possibly switching vertical switches if it keeps the bigs in tight...remember though if you switch on all players all the offense has to do is remove the help defense and then take whatever advantage they have where ever the matchup issue is they want to take advantage. Consequently, I don't see much difference in how Purdue will play the D other than more focus, more hustle and maybe another step towards the ball and still being able to recover appropriately. Purdue's normal shell defense will be practiced and extended with hustle adn focus being addressed.
I don't recall a single time (I could be wrong if someone knows) that Purdue got beat on a back-door cut. That would have been more of an issue years ago when Purdue extended the pressure. You do want to bump all cutters and play position D so that only the inside arm is in the passing lane and the backcut is not there rather than more denial D. A zone will not be employed for all the thousands of reasons I have typed in the past a little, but more because that is not who Purdue is, who Purdue was or who Purdue will be. When Michigan places 5 behind the arc and Purdue is in a 2-3...with one person that absolutely guards nobody (who in the middle of that zone guards the arc...who defends the pass to the baseline corner shot if not in a 2-3?), Michigan has guaranteed a wide open shot to someone not being guarded...and Michigan can place 5 behind the arc...and will for a few seconds per possession. I'm sure Michigan likes their chances if one of their five is guaranteed at least one wide open shot per possession. What coach wouldn't love a wide open shot per possession and the ability to shoot at least three into gaps for long boards if a miss where inside position may not be as important as close shots)
Again, this is guess work on my part and I very easily could be wrong, but listed my concerns if wrong. I believe Purdue stays with the base D that has carried them all year. I believe that Matt puts Vince on Wagner to start and switches when needed per possession between Wager and Wilson. I believe that Cline and Dakota switch when they have to as well...and PJ a more reluctant swithc because Walton beats the others off the dribble. It sure would be nice if CArsen gets tuned in and provides solid D on Walton and makes Walton play good D on him. Now if Purdue gets burned and both Wagner and Wilson are into it...it may result in more switching to contain the drive more...but that is not a good situation for Purdue anyway...but doubt that happens.
Michigan has to guard the best team in teh Big as well and one game on senior day in a gym that has been very friendly to Michigan does not mean it will carry elsewhere on a different day. Michigan will have Purdue's attention if that is who they play and that alone will make for a different day.
We shall see what Purdue does in D if the play...and of course they have to beat Illinois which brings up a totally different scenario for Purdue D. Soon we shall know...