Zach Collins Rebounds Prop is currently Over/Under 5.5 (-110/-120).
The money has been on the Under as it opened 5.5 @ -115 before it was bet down to 5.5 @ -120.
FACTORS THAT FAVOR THE OVER:
The San Antonio Spurs will likely see a rise in possessions today from being pitted against the 5th-quickest pace visiting offense in the league over the last 10 games (the Rockets).