Phil Simms says Rams' Matthew Stafford has already proven he's a big-game QB ahead of NFC Championship | CBS Sports Headlines Phil Simms says Rams' Matthew Stafford has already proven he's a big-game QB ahead of NFC Championship The veteran quarterback can only strengthen his legacy with a win Sunday … Continue reading Phil Simms says Rams' Matthew Stafford has already proven he's a big-game QB ahead of NFC Championship