Brian's Baseball Bash — a fundraiser for the University of Maryland Children's Hospital hosted by Orioles second baseman
The event has been canceled "due to uncertainty around Brian's availability and condition after his recent injury," according to a news release.
Ticket holders are being contacted by the hospital.
Roberts is on the disabled list with a labral tear in his right hip and is considering surgery that would end his season.
Last year's event was canceled because he was suffering with post-concussion symptoms.