2007-2008: Roman Will appeared in one game for the BK Mlada Boleslav U20 team as a 15-year-old and played for the club's U18 team. He stopped 26 of 28 shots in a losing effort in his only U20 game. In nine games with the BK Mlada Boleslav U18 team he was 5-4 with one shutout and had a 3.17 goals against and .911 save percentage. In four playoff games he was 2-2 with one shutout and had a 1.72 goals against and .956 save percentage.
2008-09: Will played 40 of 44 regular season games for the BK Mlada Boleslav U18 team, starting two playoff games, and skated for the Czech Republic U17 team. He was 27-13 with two shutouts for BK Mlada and had a 2.68 goals against and .917 save percentage in league play and was 0-2 with a 3.00 goals against and .919 save percentage in the playoffs. Will played in three games for the Czech U17 team and was 2-1 with a 3.80 goals against and .857 save percentage.
2009-10: Will split the season between BK Mlada Boleslav's U20 and U18 teams and played for the Czech Republic in the 2010 U18 World Junior Championship. In 23 regular season games for the BK Mlada U20 team he was 10-13-0 with one shutout and had a 3.31 goals against and .899 save percentage. He was 1-2 in three playoff games and had a 2.61 goals against and .915 save percentage. Will had the top goals against (1.71) in the Czech U18 league and was 15-8 in 23 games with six shutouts and a .945 save percentage. Will played 12 games for the Czech U18 team, including three at the WJC, and was 6-5-1 with a 3.78 goals against and .879 save percentage.
2010-11: Will made his pro hockey debut with BK Mlada Boleslav's men's team in the relegation playoffs and played 48 games for the BK Mlada U20 team. He allowed five goals on 22 shots in two periods of action in his only Tipsport Extraliga appearance. Will was 30-18-0 with three shutouts and had a 2.24 goals against and .935 save percentage for the Boleslav U20 team. He played in three international games with the Czech U20 team and was 1-2 with a 3.28 goals against and .899 save percentage. Will was selected by Moncton in the first round (29th overall) of the 2011 CHL Import Draft.
2011-12: Will appeared in 63 of 68 regular season games for the Quebec Major Hockey League's Moncton Wildcats in his first season in North America. He was 29-25-7 with one shutout and had a 2.77 goals against and .913 save percentage. The Wildcats finished fourth in the Maritimes Division and were swept by Halifax in a first round playoff series. Will played in all four playoff games and had a 5.56 goals against and .843 save percentage.
2012-13: Will returned to the Czech Republic to play for BK Mlada Boleslav's men's team in the Tipsport Extraliga (Czech second league). In 44 regular season games he was 33-11 with six shutouts and had a 1.87 goals against and .935 save percentage. Will was 8-2 in ten playoff games with one shutout and had a 1.43 goals against and .953 save percentage. He started all five games for BK Mlada in the relegation series and was 1-4 with a 3.01 goals against and .904 save percentage. Boleslav was unable to gain a spot in the Czech Extraliga for 2013-14.
2013-14: Will played in 20 games for BK Mlada Boleslav in the regular season and was 16-4 with five shutouts; posting a 1.84 goals against and .929 save percentage. He was 8-2 with two shutouts in 10 playoff games and had a 1.81 goals against and .921 save percentage. He was 0-2 in two relegation playoff games and had a 5.27 goals against and .849 save percentage. Will signed a two-year entry-level contract with the Colorado Avalanche on May 15th, 2014
Will signed an entry-level contract with the Colorado Avalanche on May 15th, 2014