O'Hearn went 3-for-5 with a two-run homer in Tuesday's 7-6 loss to the Red Sox.
O'Hearn logged his first three-hit game of the year with a pair of singles and a two-run blast in the fifth to put the Royals back up 6-5. The 27-year-old spent nearly a month at Triple-A Omaha after showing struggles early in the year but is slashing .333/.333/.606 with 11 hits, seven RBI and four runs scored in eight games since being recalled back to the big club June 21.