An all-state selection from Milwaukee, WI, Jamari Sibley averaged 19.6 points and 7.6 rebounds his senior season at Oak Hill Academy, and was the third highest ranked recruit signed by Ewing to date when he committed in November 2019, behind James Akinjo and Qudus Wahab.

Widely expected to take the role of a scoring forward in a position that had once shown promise under Josh LeBlanc, Sibley saw no action in the first three games of the season. When asked by NBC Sports Washington in December if there was an update on Sibley, head coach Patrick Ewing responded that "There's no update. When I think he's ready to play, that's when he'll play."

"The biggest attributes of Sibley's game that could have an immediate impact are his scoring ability and athleticism," wrote NBC's Tyler Byrum. "But until Ewing deems Sibley ready to hit the hardwood, he seems to have a spot reserved on the bench." If there was a doghouse for Sibley, he took residence there most of the season, as Ewing opted for extended minutes from 6-7 grad transfer Chudier Bile instead.

Sibley averaged just 1.2 points per game in 21 appearances. A seven point effort in eight minutes versus his Marquette was a season high on Jan. 2. He played in just one minute of Georgetown's 96-73 loss to Colorado.

Sibley transferred to UTEP for the 2021-22 season, averaging 5.1 points per game.