Manziel, who had a run-in with a fan at the Byron Nelson Classic PGA tournament in Irving, Texas, last weekend, did not speak with reporters on Saturday. He has not spoken to media since the Browns began their organized team activities.
During the softball game, Manziel also hit a home run estimated at 360 feet.
Manziel played baseball in high school before giving the sport up to focus on football. The San Diego Padres drafted him as a shortstop in the 28th round of the 2014 MLB draft.
- Mike Fiammetta