Claim: Marcus Allen's brother is a former professional quarterback.

Damon Allen -LRB- born July 29 , 1963 -RRB- is a former professional quarterback who played in the Canadian Football League . He is currently second in all-time professional football passing yards and second in all-time CFL passing yards after he was surpassed for first place by the Montréal Alouettes ' Anthony Calvillo on October 10 , 2011 . He is pro-football 's combined passing & rushing leader with a total of 84,301 yards . Allen retired as professional football 's all-time leading passer with 72,381 passing yards after he surpassed Warren Moon 's total of 70,553 yards -LRB- in both the CFL and NFL combined -RRB- on September 4 , 2006 in the annual Labour Day Classic . He also retired in third place in all-time CFL rushing yards with 11,920 yards , behind Mike Pringle and George Reed . The 2007 season marked Allen 's twenty-third season in the CFL and he officially announced his retirement on May 28 , 2008 at age 44 . Allen is the younger brother of Pro Football Hall of Famer Marcus Allen .   Allen has been mentioned as one of the greatest CFL quarterbacks of all time after winning four Grey Cups with four different teams , he also was a three time Grey Cup MVP . In 2005 , he was the CFL Most Outstanding Player at 42 yrs . old , becoming the oldest MVP of any North American sports franchise . He was a formidable passer and rusher , as he retired only 323 yards behind his brother Marcus . In 2012 , he was elected into the Canadian Football Hall of Fame .   In May 2010 , Allen launched the Damon Allen Quarterback Academy , in which he personally teaches the skills and strategies of quarterbacking to students of all ages and skill levels .