BALTIMORE -- Manny Machado hit two of Baltimore's season-high six homers, including a grand slam, and the Orioles scored all their runs on long balls in an 11-3 rout of the Oakland Athletics on Sunday.
Machado connected with a man on in the first inning and added his third career slam in the eighth. The six RBIs were a career high.
Machado, Pedro Alvarez, Jonathan Schoop and Mark Trumbo homered off Kendall Graveman (1-4). Joey Rickard added a solo shot off Ryan Dull before Machado capped the fence-clearing barrage against J.B. Wendelken, making his major league debut.
Trumbo finished a double short of the cycle. He singled in the first inning, hit a two-run shot in the third and was credited with a triple when his high fly to right was lost in the sun by Josh Reddick.
Trumbo popped out in his final two at-bats. The last one came against Oakland catcher Josh Phegley, who retired two straight batters in the eighth after manager Bob Melvin decided against using another pitcher.
Reddick went 3 for 3 with a walk, giving him a franchise-record-tying eight straight hits. He was 10 for 12 in the three-game series.
But Oakland lost the final two games and has dropped six of seven overall to fall a season-high four games under .500 at 14-18.
Baltimore's Chris Tillman (4-1) gave up three first-inning runs before settling down to win his third straight start. The right-hander allowed six hits over 6 1/3 innings, striking out seven and walking four.
The A's got four hits in the first inning, including run-scoring singles by Reddick and Danny Valencia.
Machado answered in the bottom half, and Baltimore took the lead in the second inning on back-to-back drives by Alvarez and Schoop.
Trumbo's ninth homer made it 6-3 in the third.
Graveman gave up six runs in 2 2/3 innings, including a career-high four homers. The right-hander is 0-3 with a 10.53 ERA in his last three starts.
The Athletics recalled Wendelken from Triple-A Nashville and optioned right-hander Jesse Hahn to Nashville. The move was made because the A's needed a fresh arm following Saturday's split doubleheader.
Athletics: RHP Henderson Alvarez (shoulder) probably won't be activated before completing his entire rehabilitative assignment. "We're not going to rush him," Melvin said. ... Oakland has had at least three players on the DL every day since July 30, 2011.
Orioles: RHP Yovani Gallardo (shoulder tendinitis) could begin throwing on the side during the next homestand, May 12-19, manager Buck Showalter said.
Athletics: The A's continue their East Coast trek Monday night in Boston for the opener of a three-game series. Sonny Gray (3-3, 4.84 ERA) starts for Oakland.
Orioles: Tyler Wilson (1-1, 3.04 ERA) goes for Baltimore on Monday night in Minnesota, where the Orioles will play three games before returning to Camden Yards. Baltimore's 13 wins at home are the most in the majors.
Machado hits 2 HRs, has 6 RBIs as Orioles top A's 11-3
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