Tom Brady started his career as a backup to Drew Bledsoe and only threw 3 passes his rookie year. In the second game of Brady's second year, Bledsoe got drilled in the chest, suffering internal bleeding. Brady then led the Pats to 11 wins in 14 starts and into the playoffs. Since then, he's won 3 Super Bowls of the five he's been in, set the single season passing TD record and done a whole bunch of stuff that would just take too long to list here.
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