One of the greatest right arms in the history of sports no longer works.
Drew Brees made the shocking revelation this week ... admitting he can't throw overhand anymore.
"Look," the future Hall of Famer said on Tuesday on ESPN Radio. "I'll let you in on a little fact. I don't throw with my right arm anymore. My right arm does not work. So, when I throw in the backyard right now, I throw left-handed."
Brees said on the show it all stems from the devastating shoulder injury he suffered while playing for the San Diego Chargers during the 2005 season.