Remember, John Elway has forgotten more about football than you'll ever know ... and he thinks the game will be good to RGIII on Sunday -- saying the Browns QB will "do well" in his first start back.
Elway -- who won two Super Bowls as a player and built a SB winning team as a GM in Denver -- was out in L.A. when we asked how he thought RG3 would fare in his first game action since September.
Griffin threw for just 190 yards and an interception in his last start against Philly ... but John says things will be different this time.
STOP SCOFFING. He's John Elway and YOU'RE NOT (he's probably wrong, though).
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