Harrison Barnes Blocks Prop is currently Over/Under 0.5 (+450/-800).
The money has been on the Under as it opened 0.5 @ -650 before it was bet down to 0.5 @ -800.
FACTORS THAT FAVOR THE OVER:
The Spurs will likely get a boost in possessions in this contest from sharing the court with the 7th-most up-tempo pace-of-play home team in the NBA over the last 5 games (the Chicago Bulls).
FACTORS THAT FAVOR THE UNDER:
The Spurs have played at the 6th-least up-tempo tempo in the NBA this year.