When Phillip asks Geoffrey for his cue stick, he calls for 'Lucille'. This is the same name as the guitar of B.B. King, and Negan's infamous barbed wire covered baseball bat in the Walking Dead.
Will and Philip are revealed to be great at playing pool. We also learn that Philip uses his pool cue, Lucille, to play pool.
Will tells Uncle Phil that there's men at the pool hall who would make him "look like Webster". James Avery, who played Uncle Phil, once guest starred as a judge on Webster.
In the first game of pool Phil plays against Charlie, Charlie appears to scratch on his final shot while pocketing the 8-ball. Depending on house rules, this could make Phil the winner of that game. At minimum, the 8-ball should have been removed and play resumed with Phil. But nobody in the scene raises the point.