Norman Powell Blocks Prop is currently Over/Under 0.5 (+350/-520).
The money has been on the Under as it opened 0.5 @ -470 before it was bet down to 0.5 @ -520.
FACTORS THAT FAVOR THE OVER:
The fastest pace team in the NBA this year has been the Miami Heat.
The Miami Heat will likely see a rise in opportunities in this game from sharing the court with the 3rd-fastest pace offense in the NBA this year (the Chicago Bulls).