SCOTTSDALE, Ariz. — San Francisco’s Chris Marrero belted a three-run, walk-off home run as the Giants rallied past the Reds, 6-4, on Friday in Cincinnati’s Cactus League opener at Scottsdale Stadium.

Marrerro’s blast came off Reds right-hander Kevin Shackelford, who had walked Orlando Calixte before a Christian Arroyo single.

The ninth-inning comeback helped the Giants overcome a 3-1 deficit through four innings after Cincinnati got to San Francisco ace Madison Bumgarner for two runs in the top of the first and then scored another run in the top of the second. The Reds were leading the Giants 4-3 entering San Francisco’s final at-bat.

Marrero, who replaced Giants’ first baseman Brandon Belt in the fifth inning, finished 2-for-3 with four RBIs.

The Reds’ big hit off Bumgarner in the two-run first was a two-out, two-run single through the left side of the infield by Patrick Kivlehan. Arismendy Alcantara had doubled with two outs before Bumbarner walked Adam Duvall and hit Jesse Winker with a pitch to load the bases.

Reds starter Rookie Davis gave a run gack to the Giants in the bottom of the first when Joe Panik singled and scored on a Hunter Pence double. The Giants scored again in the fifth off Wandy Peralta when Jimmy Rollins walked and came around on singles by Gordon Beckham and Marrero.

Reds prospect Sal Romano came on for Davis and pitched two scoreless innings in his first bid to earn a roster spot this spring. He allowed one hit with two walks and struck out four.

“I was very excited just to be out there, to be honest with you,” Romano said. “It didn’t really matter who was hitting but the fact that most of the Giants lineup was in there was a good test for me. Definitely a good start to spring. I felt like my fastball was there. I was able to elevate it when I wanted to and it was down for most of the time.”

Aristides Aquino smacked an RBI single off the glove of shortstop Calixte in the seventh inning to put the Reds up 4-2 but the Giants’ Wynton Bernard doubled and scored on a wild pitch in the eighth to cut the margin to 4-3.

The Reds (0-1) will be back Goodyear, Ariz., today where they will be the visiting team in a 3:05 p.m. game against the Indians. Cincinanti regulars Joey Votto, Billy Hamilton and Eugenio Suarez will see their first action of the spring and prospect Amir Garrett is scheduled to start on the mound.
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