He has continued to throw off flat ground while sidelined with a teres major strain and will start throwing off a mound in Florida.

Source: https://www.bostonherald.com/2023/04/12/mets-notebook-edwin-diaz-ahead-of-schedule-with-rehab-of-torn-patellar-tendon/

In his last start of spring training, McKenzie suffered a strain of his right teres major muscle.

Source: https://www.forbes.com/sites/jimingraham/2023/03/31/potential-trouble-spots-for-the-cleveland-guardians/

Rangers general manager Chris Young said an MRI on Wednesday revealed a low-grade strain of the teres major muscle that won’t require surgery.

Source: https://www.cornwallseawaynews.com/ontario-news/rangers-rhp-scherzer-to-miss-rest-of-regular-season-because-of-strained-muscle/