MESA, Ariz. -- The A's and Cubs combined for 30 hits and 26 runs, but in the end, it was the Cubs that walked off the field with the 15-11 victory in front of 15,448 at Sloan Field in the final Cactus League game for both teams.
With the victory, the Cubs finished with a 12-17-5 record while the A's finished 16-15.
"We were a little spotty here at the end, but I think everybody is ready to go," A's manager Bob Melvin said. "It's good to see us come back and see some young guys in a big crowd like that, so it was a good opportunity to get a good look."
Trailing 7-2 after three innings, Andrew Lambo and Matt McBride hit back-to-back homers as part of an eight-run fourth inning to put the A's ahead, 10-7. Kyle Schwarber's two-run home run, his second homer of the day, in the bottom of the fourth, cut Oakland's lead to 10-9.
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Kendall Graveman was scheduled to start for the A's, but was not feeling well and pitched in a Minor League game instead. His replacement, Santiago Casilla, was charged with five first-inning runs and lasted only six batters before he was replaced by Kyle Finnegan.
The only two hits allowed by Casilla were a solo home run to Schwarber and a grand slam by Albert Almora Jr. that put the A's in a 5-0 hole.
"[Casilla] had to start the game and there are a lot of things that can get a reliever out of sorts," Melvin said. "I thought he had the first guy struck out. Guys like that will turn it up a little bit so I'm not too worried about that."
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The ball was flying out of Sloan Park on Wednesday. A's shortstop Marcus Semien hit a two-run home run off Cubs starter John Lackey in the top of third inning to cut the Cubs' lead to 6-2. But the Cubs answered with a solo home run from Willson Contreras in the bottom of the frame to push the lead back to five runs.
The teams combined to hit seven home runs during the game.
Lackey was charged with seven runs on seven hits in 3 2/3 innings. He struck out three and walked one batter.
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"I felt like I was ready a week ago," Lackey said. "Today was just kind of throwing some pitches and getting out of here healthy. Honestly, just trying to get the pitch count up, just trying to be healthy when we start the season. I feel fine."
A's up next: The A's return to the Bay Area for a three-game exhibition series against the Giants, the first two of which will be played at AT&T Park. Thursday's game begins at 7:15 p.m. PT. It will be broadcast live on MLB.TV, and features Sean Manaea, the A's No. 2 starter, against Johnny Cueto.
Cubs up next: The Cubs head to Houston for a pair of exhibition games on Thursday and Friday against the Astros at Minute Maid Park. Thursday's game is at 7:10 p.m. CT and broadcast live on MLB.TV. Addison Russell is expected to return to the lineup after a seven-day hiatus with lower back stiffness. Brett Anderson, who won the No. 5 rotation spot, is slated to make his fourth start of the spring.
Watch every out-of-market regular-season game live on MLB.TV.