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03/05/12 6:11 PM ET

DeWitt goes yard in Dempster's solid debut

Cubs DH belts three-run shot; starter yields run in two innings

MESA, Ariz. -- Yordy Cabrera, a non-roster invitee, led off the ninth inning with a tie-breaking home run to lift the Athletics' split-squad team to an 8-7 victory Monday over the Cubs.

The Athletics took a 1-0 lead in the second, when Josh Reddick tripled and scored on Brandon Allen's sacrifice fly for his eighth RBI this spring. Allen drove in seven runs on Sunday in Oakland's 12-10 win over Chicago.

Blake DeWitt belted a homer on the first pitch he saw from A's starter Bartolo Colon with two outs and two on in the Cubs' second for a 3-1 lead. Colon, who is scheduled to start March 29 in Tokyo against the Mariners in Oakland's second regular-season game, was pulled after 2 2/3 innings.

Ryan Dempster made his first Cactus League start, giving up one run on two hits over two innings in front of 5,809 at HoHoKam Park.

The Cubs added three runs in the fourth on a sacrifice fly by Steve Clevenger, an RBI double by Josh Vitters and an RBI single by Darwin Barney.

The Athletics closed to 6-5 in the sixth against Marco Carillo as Reddick hit an RBI single, Wes Timmons hit a sacrifice fly and Landon Powell added a two-run double. Brandon Moss hit an RBI double with one out in the seventh off Manuel Corpas to tie the game and then scored on Michael Choice's single.

Chicago had runners at first and second with two outs in the seventh, when Blake Lalli hit a game-tying RBI single.

Up next for Cubs: Matt Garza will make his first Cactus League start on Tuesday, when the Cubs play host to the Rockies at HoHoKam Park. The game will be broadcast on Gameday Audio and WGN Radio, starting at 2:05 p.m. CT. Garza was 10-10 last season, his first with the Cubs. Expect to see more of the Cubs' regulars in the lineup, such as Alfonso Soriano, David DeJesus and Marlon Byrd.

Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter@CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.