Keetley began his major junior career in 2003–04 with the Medicine Hat Tigers of the Western Hockey League (WHL).

He initially began the season in the Alberta Midget Hockey League but took over as the starting goalie for the Tigers during the 2004 WHL playoffs, subsequently leading the club to a President's Cup championship.

In a game against the Colorado Avalanche on November 5, 2007, Keetley made his NHL debut, replacing Kiprusoff with just under 10 minutes to go in the third period, making two saves.

[3] On February 10, 2009, Keetley was reassigned to Calgary's ECHL affiliate in Las Vegas for seven games before returning to Quad City's roster.

[5] During his brief three game stint with Victoria, Keetley recorded two wins and two shutouts and was named the ECHL's Goaltender of the Week on November 17, 2009, before he returned to the Heat's lineup.