Brian Matthew Duensing (born February 22, 1983) is a free agent American professional baseball pitcher. He has played in Major League Baseball (MLB) for the Chicago Cubs and Pittsburgh Pirates. Listed at 6' 3"', 190 lb. , he bats left and throws right-handed. Duensing was drafted by the Cubs in the second round of the 2005 MLB draft. He made his major league debut on April 17, 2013 against the San Diego Padres. He was traded to the Pirates prior to the 2018 season after signing as a free agent with Pittsburgh earlier that year. In 2019, he was 2-3 with a 4.50 ERA in 46 innings pitched between the Cubs and Pirates. He also struck out 45 batters while walking 21 opponents. Duensing is from Elkhorn, Nebraska and attended Creighton University before being drafted by the Cubs. As a Cub, he has worn number 44 since joining the team in 2014. He is the younger brother of former major league pitcher Matt Duensing. They are both of Czech descent through their mother. Brian Duensing married his wife, Kaitlyn, in June 2010.