As Chan challenges Jerry to his limits in a private poker game, Jerry’s pals look to pry him away from his gambling nemesis. Ace takes a meeting with Claire Shea, an activist who hopes to rehabilitate prisoners through their work with broken-down racehorses. He then visits his one-time partner Michael Smythe to discuss his participation in Ace’s racetrack venture. With Ronnie out of commission and surrendering to old vices, Walter settles on Rosie as his jockey, but her euphoria is tempered by Leon’s not making weight. (AC, AL, N) Premieres 2/19.