You asked about Sadler health, here is a quip from MLB article
Sadler filled the perfect bridge role for manager Scott Servais the last time he was regularly on the mound as the first bullpen arm after the starter. He’ll be up against whoever else the club invites on similar Minors deals, but he’s on track with his throwing program to be 100% in camp, and if there are hiccups, it’s possible he begins the year at Triple-A Tacoma. Regardless, he’s looking forward to the opportunity