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In his first at-bat on Pet Brock Day, Brock Holt, of course, homered

On Tuesday, during the Giants-Red Sox game at Fenway Park, it was Pet Brock Day. Yes, like the Pet Rocks -- except Pet Brock. As in Red Sox utility star Brock Holt. Here, just look below:

So, what do you do when your team is giving away rocks with your name on it? You hit a home run in your first at-bat of the game:

Good job, Brock (and rocks).