RG3'S WALLET MUST BE AVENGED!!!
The Cleveland Browns are launching an investigation into the pillaging of the QB's wallet -- which allegedly went down after his GF valet parked her car in the "players and family garage" at FirstEnergy Stadium.
Grete Sadeiko claims her wallet -- and RG3's wallet -- were left inside the car and when she returned ... the cash in both wallets had been taken.
Grete tells TMZ Sports she notified the team and was told "they are looking into it and are going to solve the problem.