Bobby Portis Rebounds Prop is currently Over/Under 5.5 (-150/+118).
The money has been on the Under as it opened 6.5 @ -143 before it was bet down to 5.5 @ +118.
FACTORS THAT FAVOR THE OVER:
The 9th-quickest pace offense in the NBA this year has been the Bucks.
The Raptors have played at the 10th-quickest pace in the league this year, which ought to increase possessions for the Bucks.
FACTORS THAT FAVOR THE UNDER:
Offensive rebounds maintain possession and bring about added opportunities for scoring and assists, but the Milwaukee Bucks rank 1stworst in in the league with a mere 8.4 offensive boards per game since the start of last season.