Kyle Seager went 3-for-4 with a homer and three RBI as the Mariners beat the A's 11-8 on Friday.
Edgar Olmos surrendered five runs -- four earned -- in 1 1/3 innings Friday in his start against the A's.
Stefen Romero went 2-for-4 with a homer and three RBI after replacing an injured Franklin Gutierrez on Friday.
Franklin Gutierrez left Friday's game because of right groin tightness.
Nelson Cruz (quad) reported feeling improvement in his injured quadriceps on Friday, but is still expected to need another few days before rejoining the Mariners lineup.
Mariners activated LHP Joe Beimel from the 15-day disabled list.
Taijuan Walker (hip) allowed three earned runs over 6 2/3 innings Wednesday in a no-decision versus the Astros.
Logan Morrison came off the bench to walk and then hit a three-run homer Wednesday in the Mariners' 8-3 win over the Astros.
Tom Wilhelmsen got a five-out save Wednesday against the Astros.
Shawn O'Malley went 3-for-4 with a walk, a steal and two runs scored in his first big-league start Wednesday against the Astros.
Nelson Cruz left Wednesday's game with a strained right quad.
James Paxton (finger) left his minor league start Wednesday with a blister.
James Paxton (finger) left his minor league rehab start with an apparent injury Wednesday.
Mariners optioned 1B/DH Jesus Montero to Triple-A Tacoma.
James Paxton (finger) is expected to rejoin the Mariners' rotation next week.