John Allen Henson is an American professional basketball player for the Milwaukee Bucks of the National Basketball Association (NBA). Henson attended Round Rock High School in Round Rock, Texas for three years. He was transferred to Sickles High School in Tampa, Florida in his senior year. In the 2008-09 season, Henson averaged 17.6 points, 12.2 rebounds, and 6.1 blocks per game and blocked 10 or more shots five times with a high of 11 on four occasions as a senior as well.
Henson was selected in First-team All-State and was named as the Tampa Bay Coaches Association Player of the Year. He also earned first-team Parade All-American honors. After being stated as one of the best of the 2009 recruiting class, Henson started his college basketball for the University of North Carolina at the small forward position for the 2009-10 Tar Heels.
As a sophomore, Henson was the winner of the ACC Defensive Player of the Year award for 2011 after averaging 11.7 points, 10.1 rebounds and 3.2 blocks per game. He backed it up with another ACC Defensive Player of the Year award, averaging 13.7 points, 9.9 rebounds and 2.9 blocks per game as a junior in 2011-12 season.
Henson was selected as the 14th overall pick in the 2012 NBA Draft by the Milwaukee Bucks. In his rookie season, Henson scored a career-high 28 points in a 95–89 win over the Oklahoma City Thunder. The 2013-2014 season saw Henson have the best statistical year of his career so far. He averaged 11.1 points and 7.1 rebounds along with 1.7 blocks per game as he came off the bench in 47 of the 70 games he played. In the 2014-2015 season, Henson finished fifth in the league for blocks per game with 2.01. He became one of just seven players in Bucks history to average over 2.0 blocks in a single season. He signed a four-year, $45 million contract extension with the Bucks in 2015.