Mariners' Rob Whalen: DFA'd by Mariners

Whalen was designated for assignment by the Mariners on Saturday, Ryan Divish of The Seattle Times reports.

Whalen made one appearance with the Mariners this season, allowing one hit and one walk over four scoreless innings in June. The 24-year-old has a 5.48 ERA and 1.62 WHIP over 110 minor-league innings this season.