Mariners' Keynan Middleton: Optioned to Triple-A

Middleton was optioned to Triple-A Tacoma on Wednesday.

Middleton rejoined Seattle's bullpen on June 24, but he had inconsistent results since the All-Star break. The righty posted a 7.88 ERA and 2.88 WHIP in eight innings across his last nine appearances and will attempt to get back on track with the minor-league club. Casey Sadler was reinstated from the paternity list to take his place in the bullpen.