OAKLAND, Calif. -- Trevor Plouffe hit a three-run homer, and Ryon Healy went 3-for-3 with a double and two RBIs, powering the Oakland Athletics to their third straight win, a 9-6 victory against the Seattle Mariners at the Oakland Coliseum on Thursday night.
The A's led 6-5 entering the bottom of the seventh inning. After Mariners reliever Dan Altavilla walked Khris Davis and Healy with one out, Plouffe crushed the next pitch over the left field fence for his fourth home run of the season to make it 9-5.
Rajai Davis went 2-for-5 with an RBI and two runs for the A's but left the game after the bottom of the eighth inning with an apparent leg injury. Jed Lowrie had two hits, including a double, and scored once. Ryan Dull (1-1) pitched 1 1/3 scoreless innings in relief for the win.
Taylor Motter went 2-for-4 with a two-run homer and a double and scored twice for Seattle.
Mariners left-hander James Paxton entered the game with 21 straight scoreless innings to start the season, a franchise record, and he blanked the A's in the first and second. However, his streak ended in the third when Oakland scored three runs. Paxton allowed five runs on nine hits over 4 1/3 innings, striking out eight and walking one.
A's right-hander Cesar Valdez, 32, was called up from Triple-A Nashville and made his first major league appearance since May 8, 2010, with Arizona. Valdez, making a spot start in place of injured righty Kendall Graveman (strained right shoulder), allowed three runs on five hits over four innings.
The Mariners trailed 5-3 through five innings, but Nelson Cruz hit a leadoff double in the sixth off reliever Frankie Montas, and Motter lined a two-run homer to center with one out.
Oakland regained a 6-5 lead in the bottom of the inning when Josh Phegley drilled a leadoff double off Evan Scribner (0-2), moved to third on a sacrifice bunt and scored on Rajai Davis' groundout.
The Mariners grabbed a 1-0 lead in the first inning when Jarrod Dyson lined a leadoff single and scored on Robinson Cano's one-out single.
Seattle extended its lead to 3-0 in the second inning. Motter lined a leadoff double, and Danny Valencia walked. After Leonys Martin grounded into a force-out, Mike Zunino lined an RBI double to left. Dyson singled Martin home.
The A's scored three times in the third off Paxton. Jaff Decker hit a leadoff single and moved to third on Rajai Davis' single. Adam Rosales drove in Decker with a single to right, and Rajai Davis scored when Mitch Haniger's throw hit the bag at second and bounced away. Healy drove in Rosales with a two-out double.
Oakland scored two runs in the fifth to take a 5-3 lead. Rajai Davis lined a leadoff single to center and kept running to third when the ball went through Martin's legs for an error. Rosales hit a sacrifice fly, bringing Rajai Davis home. Lowrie doubled and moved to third on a wild pitch. After Khris Davis walked, Healy lined an RBI single to left.
NOTES: C Bruce Maxwell was optioned to Triple-A Nashville by the A's, clearing a roster spot for the arrival of RHP Cesar Valdez. Oakland moved SS Marcus Semien (wrist) from the 10-day disabled list to the 60-day DL to open a spot for Valdez on the 40-man roster.... Mariners 1B Danny Valencia faced the A's for the first time since they traded him to Seattle on Nov. 12 for RHP Paul Blackburn. He went 1-for-3 with a double.