P.J. Washington Blocks Prop is currently Over/Under 0.5 (+120/-155).
The money has been on the Under as it opened 0.5 @ -140 before it was bet down to 0.5 @ -155.
FACTORS THAT FAVOR THE OVER:
The Wizards have played at the 4th-quickest pace-of-play in the league since the start of last season, which should raise possessions for the Mavericks.