Minor MLB Transactions: 5/28/21

The latest minor moves from around the league:

• The Phillies announced this afternoon right-hander Ramón Rosso cleared waivers and was sent outright to Triple-A Lehigh Valley. Philadelphia designated the 24-year-old for assignment last week. Rosso has pitched in eight games for the Phils over the past two seasons, tossing eleven innings of seven-run ball, striking out eleven while issuing eight walks. He’s worked mostly as a starting pitcher in the minors, performing well up through Double-A but struggling to a 5.59 ERA with mediocre strikeout and walk rates (19.4% and 10.8%, respectively) in 77 1/3 frames at the minors’ highest level. He’ll remain in the organization as a depth option.
• The Mariners have signed reliever Brian Schlitter to a minor league deal, per the MLB.com transactions tracker. He has been assigned to Triple-A Tacoma, where he’s on the Rainiers active roster. Schlitter broke into the majors with the Cubs in 2010 and saw action in parts of three seasons with Chicago. The righty returned to the big leagues in 2019 with the Athletics, tossing 9 2/3 innings of four-run ball. Schlitter pitched in five games for the A’s Triple-A affiliate this season but was released from his minor league deal with Oakland earlier this week.