Chicago Bears Countdown to Kickoff: 52 Days with Khalil Mack

Khalil Mack's Raiders tenure and trade to the Chicago Bears

Mack didn't skip a beat transitioning from the MAC to the AFC West, and as a rookie, he started in all 16 games where he recorded four sacks, 16 tackles for loss, and a forced fumble. At the end of the season, Mack ranked third in Defensive Rookie of the Year voting.

Mack's rookie season would only be a peek into his dominance as a Raider. Across four seasons in Oakland, Mack went on an absolute tear, recording over 300 total tackles, 68 tackles for loss, 40.5 sacks, nine forced fumbles, and an interception.

During this time, Mack was named the Defensive Player of the Year in 2016, was selected for three Pro Bowls, received two First-Team All-Pro nods, and started in all 64 of the team's regular season games. In 2015, Mack became the first player in NFL history to make the First-Team All-Pro at two different positions, doing so as an outside linebacker and defensive end.

Heading into Mack's fifth season, the all-star player held out of the team's training camp and looked for a new extension that put him near the top of the league in terms of annual salary. After a lengthy holdout that went right up until the season opener, the Raiders ended up trading Mack to the Chicago Bears just nine days ahead of the team's first game, a Sunday Night Football battle against the Packers.

In exchange for Mack, the Raiders received several picks, including first-rounders in 2019 and 2020, the first of which turned into Josh Jacobs. The Bears also received a 2020 second-rounder in the deal which turned into Cole Kmet.