On May 25 , Jhonny Peralta hit a walk - off home run in the tenth inning against the Arizona Diamondbacks , his seventh home run of the season .
Matt Carpenter homered for his 500th career hit and 300th career run scored .
On May 25 , Jhonny Peralta hit a walk - off home run in the tenth inning against the Arizona Diamondbacks , Matt Carpenter 's seventh home run of the season .
Matt Carpenter homered for his 500th career hit and 300th career run scored .