Police Lt. Keith Brown told the Reno Gazette-Journal the Los Angeles native, who was set to enter his junior year, was shot once in the abdomen early Saturday morning near downtown Reno.
The injuries aren't life threatening, but Wolf Pack head Coach Chris Ault said the standout wide receiver sustained severe internal damage and is unlikely to play football again.
Police said they were seeking the shooter in the incident.
"Brandon is very fortunate. ... It's an extensive injury. Another centimeter and the doctor said he might not have made it to the hospital," Ault said.
Wimberly was on track to graduate early and had received permission to take extra summer school classes.
"He is probably the most liked player on our team," Ault told the Gazette-Journal. "It's unfortunate that it happened the way it did. And you see things like this and the next thing you know it's too late."
Wimberly posted 41 receptions for 482 yards in 2010, with 94 catches for 1,215 yards and six touchdowns in his collegiate career.
Costly malfunction causes beer flood at Boston-area brewery
Megyn Kelly: Santa Claus and Jesus are both white men