Martinez went 2-for-5 with a grand slam, six total RBI, a run scored and a strikeout during Friday's 8-2 win over the White Sox.
Martinez got the scoring started in the first inning with a two-run single, giving Cleveland a 2-0 lead. The 24-year-old then stepped to the plate in the fifth inning and blasted a grand slam. Martinez logged a season-high six RBI, breaking his previous record of four, which he accomplished twice earlier this season. He has slashed .231/.266/.424 with a career-high 12 home runs, 42 RBI, nine steals and 31 runs scored in 284 plate appearances.