What It Means:

Martinez will step in at designated hitter with the Cardinals playing under American League rules as visitors in Fenway. He's sliding down to the eight-hole versus Red Sox right-hander Rick Porcello. Kolten Wong will also move down a spot, from sixth to seventh in the order. Tommy Pham, Dexter Fowler, and Randal Grichuk will man the outfield for St. Louis on Tuesday.

numberFire's models project Martinez to score 10.0 FanDuel points at a cost of $2,700 on Tuesday, so he could be worth a look in a matchup that should be fantasy-friendly (10.0 over/under, 1.082 park factor).