The NFL offseason is as exciting as it has ever been in 2022 – and several of the biggest moves have centred on the AFC West.

This was already one of the deepest divisions in football, headlined by Patrick Mahomes and the Kansas City Chiefs but also featuring the 2021 fifth seed Las Vegas Raiders and gunslinging Los Angeles Chargers quarterback Justin Herbert in its supporting cast.

But the lineup for next season promises to be even more enticing.

The Raiders have worked to make sure they have not been left behind by the big-spending Chargers, while the Denver Broncos have also made a significant move to climb into contention.

In fact, over the past two weeks, the Chiefs have perhaps been among the big losers – watching on while the rest of their division have been getting busy...

March 8: Russell Wilson (Seahawks to Broncos)

The NFC West was previously the standard-bearer for hugely competitive divisions, but the power shifted as its fourth-placed Seattle Seahawks traded superstar quarterback Wilson to the AFC West's fourth-placed Broncos. With Aaron Rodgers staying with the Green Bay Packers, when a move to Denver had been mooted, a big play for Wilson was vital if the Broncos were to make up a significant gap. The Super Bowl XLVIII champion has ranked fourth for both pass yards per attempt (7.83) and touchdown percentage (6.2) across his NFL career – a significant upgrade on the Broncos' 2021 QBs Teddy Bridgewater and Drew Lock.

March 10: Khalil Mack (Bears to Chargers)

With Herbert running the offense, the Chargers have moved to improve the other side of the ball – first by trading for edge rusher Mack. A second-round pick in this year's draft was the primary compensation for a six-time Pro Bowler, immediately boosting a unit that ranked 23rd in total defense (360.1 yards per game) and 30th in run defense (138.9) last year. Mack struggled with injuries in his final year with the Chicago Bears but comes in opposite Joey Bosa, who ranks third in the NFL for QB pressures (389) and sixth for sacks (58) since his 2016 debut; Mack is fourth (388) and seventh (57.5) over that same period.

March 14: J.C. Jackson (free agent to Chargers)

As well as draft collateral, the Chargers had salary cap to work with and sent a large chunk of it to cornerback Jackson, allowed to leave by the New England Patriots. Jackson had certainly earned his pay day, leading the NFL in interceptions (25) since debuting in New England in 2018. This playmaking ability was also illustrated by the 26-year-old giving up big plays on only 18.9 per cent of his targets last season, the eighth-best rate among corners with at least 50 targets.

March 15: Randy Gregory (free agent to Broncos)

The Chargers' edge-rushing duo will take some beating, but the Broncos upgraded in that position, too, by giving up to $70million to Gregory, who had been set to re-sign with the Dallas Cowboys. Gregory, who missed almost three full seasons due to violations of the NFL's substance abuse policy, had finally established himself as a starter in 2021 with career highs in sacks (six) and QB hits (17) playing opposite DeMarcus Lawrence. The 29-year-old linebacker will now be paired with Bradley Chubb, despite a return to Denver for Von Miller being floated earlier in the month.

March 16: Chandler Jones (free agent to Raiders)

Having seen their division rivals make big moves, the Raiders responded with a $51m offer to Jones, while trading Yannick Ngakoue to the Indianapolis Colts for corner Rock Ya-Sin. Ngakoue had 10 sacks and forced two fumbles in his sole season in Las Vegas, but Jones (10.5 and six) topped both figures for the Arizona Cardinals in 2021. In fact, since Jones came into the league with the Patriots in 2012, he leads both categories, with 107.5 sacks and 33 fumbles forced. Although now 32, he shows few signs of slowing.

March 17: Davante Adams (Packers to Raiders)

The most stunning move of the lot followed on Thursday, when Adams' refusal to play for the Packers on the franchise tag led to his trade to the Raiders for a first and a second-round pick in 2022 (22 and 53 overall). The deal suddenly gives Raiders QB Derek Carr arguably the best offensive weapon in the NFL – and one he can go to time and time again, given Adams was targeted on a league-leading 35.4 per cent of his routes in 2021, which yielded career highs in catches (123) and receiving yards (1,553). Fellow wideout Hunter Renfrow may now see less of the ball than in his first 1,000-yard season (1,038), but he should also benefit from the attention Adams inevitably draws. The Raiders already ranked sixth in passing offense (268.6 yards per game).

The Chicago Bears are sending defensive end Khalil Mack to the Los Angeles Chargers, according to reports.

ESPN's Adam Schefter said the Chargers were expected to send a 2022 second-round draft pick and a 2023 sixth-round draft pick to Chicago in exchange for the six-time Pro Bowler.

Mack has been on the Bears since 2018, recording 12.5 sacks in his first season with the team for a fourth consecutive year in double figures.

Those numbers have tailed off a little since and the 31-year-old only played in seven games in 2021 due to injury.

However, across his Bears career, Mack still ranked as high as 12th league-wide for pressures. He will now line up opposite Joey Bosa, who ranked eighth over the same period.

Mack is also to be reunited with Chargers coach Brandon Staley, who was the Bears' outside linebackers coach in that strong first season in Chicago.

Staley will hope Mack can have a transformative impact for the Chargers' defense, which gave up 27.0 points and 138.9 rushing yards per game last year.

Chicago Bears outside linebacker Khalil Mack will miss the rest of the season due to a foot injury requiring surgery next week.

The 30-year-old six-time Pro Bowler sustained the injury in the Bears' Week 3 defeat to the Cleveland Browns but played on for the next four games.

Mack had missed the Bears' past two games – defeats to the San Francisco 49ers and the Pittsburgh Steelers – and head coach Matt Nagy confirmed he will require season-ending surgery.

"With him, it's been the last several weeks just trying to get right," Nagy told reporters.

"I think we did everything as far as trying to attack it the right way with him, and I know he's put a lot of time and energy in trying to get back and see where things are at. But this is where we're at.

"I know he's frustrated because he's such a competitor. But this is the best thing for him and the best situation to be able to help him out and get it fixed."

Mack joins veteran linebacker Danny Trevathan on injured reserve for the Bears who have a 3-6 record and face the Baltimore Ravens on Sunday.

Former NFL Defensive Player of the Year Mack recorded 19 tackles, 6.0 sacks and six tackles-for-loss across seven games this season.

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