Jalen Johnson Rebounds Prop is currently Over/Under 9.5 (+100/-134).
The money has been on the Under as it opened 9.5 @ -107 before it was bet down to 9.5 @ -134.
FACTORS THAT FAVOR THE OVER:
The Atlanta Hawks check in as the 9th-best offensive rebounding offense in the league since the start of last season (offensive rebounds maintain possession and can therefore provide additional chances for scoring and assists).