Mrázek, 29, joins the Maple Leafs after nine NHL seasons between the Carolina Hurricanes (2018-2021), Philadelphia Flyers (2018) and Detroit Red Wings (2012-2018). The Ostrava, Czech Republic native owns a record of 128-96-31 with a 2.59 goals against average, a .911 save percentage and 24 shutouts in 275 regular season games. Last season, he posted a 6-2-3 record with three shutouts, a 2.06 goals against average and a .911 save percentage in 12 regular season appearances.
Internationally, Mrázek has represented the Czech Republic at several tournaments, earning a bronze medal at the 2012 IIHF World Championship.
Mrázek was originally selected by Detroit in the fifth round (141st overall) of the 2010 NHL Draft.