Lehner, 27, won a career-high 25 games, posted a 2.13 goals-against average, .930 save percentage and six shutouts during the 2018-19 regular-season with the New York Islanders. He was named a finalist for the 2019 Vezina Trophy, given annually to the National Hockey League's best goaltender. His .930 SV% was an Islanders single-season record. He also won four games with a 2.00 GAA and .936 SV% in eight Stanley Cup Playoff games during the 2019 postseason. Lehner and teammate Thomas Greiss won the 2019 William Jennings Trophy, having allowed the fewest goals in the National Hockey League (196). The Gothenburg, Sweden native was also awarded the 2019 Bill Masterton Memorial Trophy, given annually to the NHL player who best exemplifies the qualities of perseverance, sportsmanship and dedication to ice hockey.
Drafted by the Ottawa Senators in the second round (46th overall) of the 2009 NHL Draft, Lehner spent the first eight seasons of his NHL career with the Senators (2011-15) and Buffalo Sabres (2015-18). In 265 regular-season appearances in the NHL, he has posted a mark of 97-110-40 with a 2.70 GAA and .918 SV%.