teams play (field goal return units) are rare in the American game to the point where a returner is not a standard part of a defensive field goal unit and will only be seen in unusual circumstances, with one especially notable example being the famous "Kick Six" college football game in 2013. Canadian kickoffs rarely result in a touchback, so special teams are more prominent in that area of the game as well. The difference in the games' final minutes procedures make comebacks—and the need for an onside kick 'hands' team—more prominent as well. The rule regarding last touch of the ball before leaving the play of field, rather than American football's last possession rule, makes the onside kick more likely to be successful as well. The most complex coaching job in Canadian football is said to be that of special teams co-ordinator. As many as 40 of a CFL roster of players may have a special teams role because of the wide variety of possible situations. In 2014 and 2015, the Edmonton Eskimos even used their third-string quarterbacks (Pat White in 2014 and Jordan Lynch in 2015) as part of their kick and kick-coverage teams. This is highly unusual, as quarterbacks are generally discouraged from making contact plays. Kick returning was a duty generally handled by a player with another role, such as receiver or defensive back. Henry "The Gizmo" Williams was the first player designated by telecasts as "KR" for a kicker returner position as his duties were almost entirely for that role, and referring to him as "WR" for wide receiver was increasingly seen as anachronistic. By far the greatest kick returner in professional football history, Gizmo Williams had more returns for touchdowns called back for infractions than any other player has ever scored (28: 26 punts, 2 kick-offs). No NFL player has enjoyed similar success and the careers of such specialists (like Devin Hester) come nowhere near to matching the impact on the game that such players have in the CFL. Management of offensive drives Canadian teams have only three downs to advance the ball ten yards compared to four downs in the American game. With one fewer down, Canadian teams must try for the big gain. For this reason, Canadian teams usually prefer passing over rushing to a greater extent than American, since pass attempts generally tend to gain more yards than rushing. This makes