OAKLAND, California — Jesse Chavez still can't get a win against the Seattle Mariners. Towering two-run home runs by Logan Morrison and Seth Smith made sure of that.
Nelson Cruz's 21st home run of the season and Brad Miller's eighth — both coming off reliever Evan Scribner — only made things worse for Oakland.
The A's wasted an early three-run lead and couldn't overcome Seattle's power surge in a 9-5 loss to the Mariners on Friday night.
"There's a lot of things that have been happening lately that shouldn't be happening," Chavez said after his second straight loss. "I have to go back and take a look at what's not sharp and what's not late. I don't know if it's a lack of mechanical inconsistency or mental inconsistency."
Chavez (4-8) gave up four runs and nine hits in his 6 1/3 innings. He did not walk anyone and struck out four but was done in by the long ball.
Before giving up the two-run shots to Morrison and Smith, Chavez had only allowed five home runs all season and was one of the A's best at keeping the ball in the park.
Scribner has been at the opposite end of the spectrum. The right-hander has given up nine home runs this season — most among all relievers in the American League.
"Recently the long ball's been his problem," Oakland manager Bob Melvin said. "It's some balls up in the zone, whether it's a heater up or whether it's a curveball hung to Miller. He has the ability to pitch very well for us. He's just going through a tough time."
J.A. Happ (4-5) snapped a personal four-game slide with six strong innings, giving up three runs and eight hits. He struck out five and walked none.
Mark Canha had two hits and three RBIs, Billy Burns had two hits and drove in a run and Brett Lawrie and Josh Reddick also had two hits each for the A's, who had won three of their previous four games. Marcus Semien also drove in a run.
The A's took a 3-0 lead in the second. Consecutive singles from Brett Lawrie, Reddick and Canha produced the first run, followed by Semien's RBI groundout and Burns' RBI double.
Morrison's 10th home run, with Mike Zunino abroad, cut the deficit to 3-2 in the top of the third.
"You don't ever expect (them) to swing the first pitch but a good hitter like that, guys go up there with a plan, he executed and I didn't," Chavez said.
Smith, a former Athletics player, put the Mariners ahead with his seventh homer. Cruz and Miller both hit their home runs during a five-run rally in the eighth. Mike Trumbo also drove in a run in the inning.
Robinson Cano added three hits as the Mariners won their sixth in eight games against the A's. Kyle Seager had two hits.
Seattle has hit 17 homers in its past 12 games after hitting 13 in its previous 24 games. The Mariners also extended their winning streak to 13 when scoring at least five runs.
Mariners: RHP Hisashi Iwakuma (strained back muscle) has looked good in three rehab starts with Triple-A Tacoma (1-0, 1.35) and could be activated soon. His next scheduled start is Sunday.
Athletics: RHP Sonny Gray will not go on the disabled list but he will miss his scheduled start Sunday. It's hoped he can make two starts before the All-Star break. ... Outfielder Coco Crisp is at home dealing with kidney stones.
SIGNED AND SEALED
The A's agreed to terms with their 14th round selection from the First-Year Player Draft, RHP Boomer Biegalwski from the Florida State.
Mariners: RHP Felix Hernandez (10-4, 3.05) is 20-7 with a 2.63 ERA in his career against the A's. Hernandez has not lost in Oakland in seven years, going 6-0 over his previous 14 starts there, the longest streak of undefeated starts by a visiting pitcher at O.co Coliseum.
Athletics: RHP Kendall Graveman (5-4, 3.47) is 4-2 with a 2 01 ERA in eight starts since his recall from Triple-A. He will be making his first start against the Mariners.