Martinez went 2-for-5 with a two-run double, a two run-single and a walk during Friday's 12-9 win over the Royals.
Martinez posted his second four-RBI effort in his last six games. The 24-year-old started the scoring with a two-run single in the first and later added a two-run double in the ninth to extend the lead. Over his last 15 games, the switch hitter has slashed .339/.362/.696 with four homers and 12 RBI in 58 plate appearances.