Winn (elbow) completed a 25-pitch bullpen Monday, Evan Webeck of the California Post reports.
Winn is currently on the 15-day injured list after suffering a right elbow strain earlier in the month. However, he was cleared to resume throwing one week ago, and he's since progressed to mound work. Webeck notes that Winn will remain in Arizona to continue his rehab, and if all goes well, he'll pitch in an Arizona Complex League game at the end of the week.