Yates attended the Padres' intrasquad game Sunday evening and played catch afterward, Kevin Acee of The San Diego Union-Tribune reports.
Yates wasn't with the Padres for the first few days of summer camp, but he joined the club at Petco Park on Sunday. It is unclear whether the closer has completed the intake testing necessary to take part in workouts, though Acee indicates that Yates was expected to take the field Monday.