Danny Hultzen diagnosed with rotator cuff strain and tendinitis

Mariners pitching prospect Danny Hultzen has been diagnosed with a left rotator cuff strain and tendinitis, the Seattle Times reports. Hultzen, who is ranked the 29th overall prospect by Baseball America, was scratched from his Triple-A start Thursday after he had some problems getting his arm loose.

The left-hander will undergo rehab and is expected to be sidelined for approximately two weeks, according to the report.

Hultzen was 3-1 with a 2.78 ERA to go along with 25 strikeouts and six walks in four starts (22.2 innings) with the Rainiers.