That's not all on Sheed - most of the guards, and Chauncey in particular, are completely ignoring Sheed and Dice when they establish position. It's not uncommon to see Chauncey ignore post-ups and cutters, but this is ridiculous. At least he's one of the few Pistons making an effort on defense.

And why has Flip taken 2-chest, the Pistons unguardable pet play to get
Rip a wide-open shot, out of the playbook? I'm sick of watching the hawk series, where any competent defender can stick right with Rip on the curl. Rip has a bit more potential than Wally frickin' Szczerbiak, Flip.