Khalil Delshon Mack (born February 22, 1991) is an American football outside linebacker for the Chicago Bears of the National Football League (NFL). He played college football at Buffalo, and was drafted by the Oakland Raiders fifth overall in the 2014 NFL Draft. Mack holds the all-time NCAA record for forced fumbles and is also tied for career tackles for loss in the NCAA. In 2015, he became the first first-team All-Pro in NFL history to be selected by the Associated Press for two positions in the same year, as a defensive end and outside linebacker. In September 2018, Mack was traded to the Bears and signed a six-year, $141 million extension, becoming the highest paid defensive player in NFL history.
Mack was raised by his parents: high school sweethearts Yolanda, a teacher, and Sandy Mack Sr., a program specialist, in Fort Pierce, Florida. He has two brothers, Sandy, Jr. and LeDarius. His father introduced him to sports at the age of five. Mack took an early liking to baseball and basketball although he played Pop Warner football.