After stopping at first base, Volquez raised his arms in the air briefly to celebrate what ranks as the rarest of feats.
"It's about time. I don't know how I did it," Volquez said. "I think I closed my eyes and swung."
That hit produced his first RBI since April 27 of 2008 when he was pitching for the Reds -- against the Giants and, oddly enough, also at AT&T Park.
Since 2008, Volquez has the fewest RBIs (two) of any pitcher who has at least 150 at-bats -- and that includes the run he knocked in Tuesday.
The Giants went on to win 3-2 when Brandon Crawford knocked in the winning run in the ninth inning.