Khalil Delshon Mack (born February 22, 1991)

Khalil Delshon Mack is an American football Outside linebacker for the Chicago Bears of the National Football League (NFL).

He played college football at the University at Buffalo, and was drafted by the Oakland Raiders with the fifth overall pick 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 player in NFL history to be selected first-team All-Pro at two different positions, defensive end and outside linebacker, in the same season.

In 2018, Mack was traded to the Bears for two first-round draft picks and signed a six-year, US$141 million extension, becoming the highest-paid defensive player in NFL history at the time.

Leading up to the 2014 NFL Draft, Mack was projected as a high first round pick in many mock drafts.

He was selected with the fifth overall pick by the Oakland Raiders, making him the highest selected Buffalo player ever, and the first (and only) selected in the first round.

Previously, the highest selected player from Buffalo was defensive tackle Gerry Philbin, who was selected with the 33rd overall pick by the New York Jets in 1964.

Mack chose to switch from his college uniform number, 46, to 52 in order to comply with the NFL's numbering rules.