Ynoa (hand) will begin a rehab assignment Sunday with a to-be-determined minor-league affiliate, David O'Brien of The Athletic reports.
Ynoa was scheduled to begin his rehab assignment Tuesday but instead threw a simulated game since the game was postponed. The right-hander will continue buidling up as a starter on the rehab stint, but Atlanta could also change course and bring him back sooner as a reliever.