Henry Davis hit his first career grand slam Wednesday off the Astros’ Spencer Arrighetti.

Incredibly, the slam is just Davis’s second ever extra-base hit with RISP; he was a lifetime .105/.185/.121 hitter with 220 plate appearances in those situations. Tonight, though, he managed to sock a 91.0-mph fastball (Arrighetti’s slowest of the game) 389 feet to left for a no-doubter over the Crawford Boxes. Davis struck out in his other three at-bats tonight before being removed for a pinch-hitter in the ninth. He’s at .143/.239/.294 for the season.