With 33.4 seconds left and the basketball, the Chicago Bulls found themselves in a situation where they needed a go-ahead bucket.  In this situation, you can do one of two things, go quick to try and perserve the 2 for 1, or make sure you get the best possible shot.  The Bulls went with the latter, and were able to get the go ahead basket due to some poor help defense on the weakside by Indiana:

After using up some clock, the basketball finally gets into the hands of Derrick Rose and he dribbles it out at the top of the key.  As this happens, Carlos Boozers sets a downscreen for Joakim Noah, who comes off of the screen and sets a screen of his own.  That screen is a ball screen for Derrick Rose.

Rose shows as if he is going to use the screen, but he stays up high as if to see how the Pacers were going to defend the screen (maybe trying to see if he is going to trait/bait the Pacers into the switch).

Niether of those two things happen and everything resets with Dahntay Jones on Derrick Rose and Paul George on Kyle Korver.  Rose attacks the left side and it is George’s responsibility to dig in and try to cut off penetration.

However, George is so worried that Korver is going to spot up on him, that he only reaches in instead of taking the extra step to try and get in front of Rose.  Once Rose clears George, Danny Granger is now responsible for stepping in and trying to keep Rose from getting to the rim.

However, Granger is extremely late with his help, hesitating because he doesn’t want to leave Luol Deng open in the corner.  By the time Granger commits to playing defense on Rose, it is too late as Rose is already starting to attempt his lay-up.

With nobody stopping the basketball, Rose is able to get all the way to the rim and finish the lay-in, giving his team the lead for good.  Here is the play in real time:

A couple things:

• First, it is brilliant by Bulls’ coach Tom Thibodeau to have Derrick Rose penetrate on the side where he has his two best outside shooters (Korver/Deng) spotting up.  Rose has shown he is willing to kick the basketball out (the Miami game comes to mind) in this situation, so both Korver and Deng are real threats that the defense has to worry about.  As you can see, those shooters prevented both George and Granger from committing to the help completely.
• I mentioned in my adjustment post over at SBNation I said that my biggest adjustment for the Pacers’ defense was to not overthink things.  They did it again in this game.  Instead of having Paul George defending Derrick Rose late, they gave the responsibility to Dahntay Jones.  Jones was unable to stay in front of Rose and he didn’t have the length to contest Rose at the rim.  This is the second time that the Pacers opted to go away from a one-on-one George/Rose matchup, and it is the second time the adjustment failed.
• In my opinion, Vogel probably wanted George on Korver to help and recover (he has the length and athletic ability to do so), but George showed his inexperience by reaching in on Rose instead of helping completely.