Twitter irate after Duke slaps the floor in zone defense during Sweet 16 win over Syracuse Posted Mar 24, 2018 The zone defense floor slap came late in the first half, as a Duke team that had struggled with an 11-seeded Syracuse team looked to be finally going on a run. "Can you do that in a zone?" former Duke star Grant Hill asked on the television broadcast. It turns out you can, although it came with no shortage of consternation on social media. (CBS Sports)