Arizona Diamondbacks outfielder J.D. Martinez smacked a grand slam in Arizona's win over the St. Louis Cardinals on Friday.
The homer accounted for all of the scoring in that game, as Martinez took a no-out Luke Weaver offering deep in the fourth inning, giving him 4 home runs and 11 RBI in 6 games as a Diamondback.
numberFire's models project Martinez to bat .289 and add 8 home runs and 24 RBI in 154 plate appearances over the remainder of the season.
Source: Rotoworld.com