Wilhite was in the car with Adenhart and two others who were killed in the collision with an alleged drunk driver.
A San Gabriel man has been charged with three counts of murder in the crash.
The 7:05 p.m. game featured a Golden Baseball League game between the Orange County Flyers and Calgary Vipers at CSUF's Goodwin Field.
On hand Monday night were the Fullerton firefighters who rescued Wilhite from his car after it was hit by a drunk driver.
The game was free to the public, but a silent auction of sports and film industry memorabilia was held to raise money to help pay Wilhite's medical bills.
Wilhite's family participated in the ceremonial first pitch, and a moment of silence was held for those killed in the crash.
City News Service contributed to this report.