Derrick Henry is already one of the best running backs in the NFL, but Adam Sandler just gave him an incentive to go even harder on the gridiron ... 'cause the "Happy Gilmore" actor says if the Ravens star hits 2,000 rushing yards this season -- he'll give him a movie role!!
Henry was on the "Dan Patrick Show" on Wednesday ... and at one point in the convo, the two got to talking about Sandler, as the host was rocking a "Happy Gilmore 2" sweatshirt.