Bartosak, who turns 21 on March 29, was selected by the Kings in the fifth round (146th overall) in the 2013 NHL Draft.

In 59 games for the Red Deer Rebels (WHL) this season, Bartosak has a 29-24-5 record with a 2.84 goals-against average, .923 save percentage and seven shutouts. His 29 wins are fifth in the WHL, while his seven shutouts are tied for first.

Bartosak was 33-14-5 with a 2.26 GAA. .935 save percentage and five shutouts in 55 games with Red Deer last season. Among WHL goaltenders he ranked fourth in GAA, second in spct, tied for seventh in wins, tied for seventh in shutouts and fifth in saves (1,695). He was named CHL Goaltender Of The Year, the WHL Top Goaltender and a WHL First-Team All-Star.

In 2011-12 Bartosak was 14-10-1 with a 2.74 GAA. .915 save percentage and one shutout with Red Deer.