Yates has been playing catch and his injured left knee is improving, per MLB.com.
Yates landed on the IL on March 24 due to left knee inflammation. The Angels are planning to take a cautious approach with his return, so the fact that he's been able to do some throwing -- even just playing catch -- is a positive sign. Yates' next step will likely be a bullpen session. Jordan Romano is the lead candidate for saves for the time being, and whether Yates enters the ninth-inning mix upon his return could depend on the performance of the former Blue Jays closer.