On May 20, 2014 — Chris Davis has a three-homer day to lead the Orioles to a 9-2 win over the Pirates. The second three-homer game of his career doubles his total for the year, a far cry from his breakout season in 2013 when he hit 9 long balls in April alone on his way to 53, tops in the majors and a Baltimore club record.

Source:
Baseball Reference May 20