Derrick White Blocks Prop is currently Over/Under 1.5 (+170/-225).
The money has been on the Over as it opened 1.5 @ +185 before it was bet up to 1.5 @ +170.
FACTORS THAT FAVOR THE OVER:
The Houston Rockets have played at the 4th-speediest tempo in the league over the last 5 games away from their home city, which should lead to more possessions for the Celtics.