SCOTTSDALE, Ariz. (CBS / AP) — Giants opening-day starter Madison Bumgarner pitched five stellar innings and Hunter Pence hit a pair of solo homers, pacing the San Francisco Giants to a 4-0 victory over a Colorado Rockies split-squad on Friday.

Bumgarner, a left-hander, gave up two hits, walked one and struck out four. He is manager Bruce Bochy’s choice to start at Arizona in the regular-season opener on March 31.

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Pence hit his second and third home runs of the spring, both off left-hander Christian Friedrich. Friedrich will start the season in the minor leagues.

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Giants lefty setup man Jeremy Affeldt continued his road back from hamstring issues with a scoreless seventh inning.

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