Damon Allen became pro football’s all-time passing leader while playing for the Toronto Argonauts. A few weeks ago, 44-year-old Allen ended his football career after 23 seasons and having amassed 72,381 passing yards and another 11,914 along the ground. “Empirical evidence overwhelmingly confirms that Damon is the most prolific player in pro football history,” said Argonauts chief executive officer Michael (Pinball) Clemons. “To run for almost 12,000 yards makes him one of the best rushers ever, to pass for a world record 72,381 yards makes him arguably the best passer. To do both and win four championships makes him iconic.”