NBA is certainly Bill Russell.
As for Brady, hasn't Belichick also won a ton of games with his backups? Seems like Belichick could win with a lump of malleable dough at QB.
Eagles will win this Super Bowl, based mainly on the fact Nick Foles has the same story as a young Brady. From backup to SB winner. The difference tho, is one of cities and fanbase. The Eagles will fire Foles next year, whereas Belichick elevated Brady to starting roll forever, and won 4 more rings. Won't it just be classic when Foles wins the SB, he's fired, and Wentz never even gets to the big game despite a decade of trying?
that would be classic Philly sports.