RJ Barrett Blocks Prop is currently Over/Under 0.5 (+270/-400).
FACTORS THAT FAVOR THE OVER:
The 5th-quickest tempo offense in the NBA over the last 5 games has been the Raptors.
The Washington Wizards have played at the 2nd-speediest tempo in the NBA over the last 5 games, which ought to raise opportunities for the Toronto Raptors.