William Arndt

Arndt signed with the BC Lions on January 30, 2020.

Arndt portrayed Penn State play-caller Matt McGloin in the HBO movie Paterno, which was released in early April 2018.

Following his time in Western Canada Arndt signed with the Ottawa Redblacks on September 13, 2017. Arndt spent the closing three months of the season learning from the sideline. He was re-signed by the team on January 3, 2018. Arndt spent the entire 2018 season in the CFL as a backup quarterback behind Trevor Harris. For most of the 2019 season Arndt was the third sting quarterback behind Dominique Davis and Jonathan Jennings. Arndt came in relief of starting Jennings in the second half of the team's Week 15 loss to the BC Lions. As the team fell to a record of 3-11 Arndt was named the starting quarterback for the team's Week 18 match against the Toronto Argonauts. In his first career start Arndt completed 28 of 42 pass attempts for 288 yards with two passing touchdowns and three interceptions. Arndt started the following match against the division leading Ti-Cats but was unable to effectively move the ball down the field, completing 17 of 30 pass attempts for only 112 yards with no touchdowns or interceptions. Arndt made his third and final start of the season in the second last game of the season. He was released by the Redblacks on January 23, 2020.

Arndt played for the Fort McMurray Monarchs of the Alberta Football League in 2016, leading the team to a championship victory.

William Arndt (born August 13, 1993) is an American professional Canadian football quarterback for the BC Lions of the Canadian Football League (CFL). He attended Western Connecticut State University, where he played college football. Arndt made his professional debut in 2019 for the Ottawa Redblacks.