The Kansas City Chiefs are making a huge trade to help protect Patrick Mahomes, dealing their 2021 first-round pick and three other picks to the Baltimore Ravens for offensive tackle Orlando Brown, according to ESPN's Adam Schefter. The Ravens are sending two picks along with Brown to the Chiefs in the deal.

Here's the full breakdown:

The Chiefs and Brown will explore the possibility of a contract extension, per Schefter, but there's no deal in place and NFL Network's Mike Garafolo reports a likelihood of the lineman playing out the final season of his deal. A franchise tag is a possibility next offseason.

A third-round pick in 2018, Brown had requested a trade away from the Ravens in order to play left tackle after Ronnie Stanley earned that job in Baltimore. The 24-year-old now holds one of the most important gigs in the NFL: protecting Patrick Mahomes' blind side.

The Chiefs knew they had to upgrade their offensive line after the disaster in the Super Bowl against the Tampa Bay Buccaneers. With Eric Fisher and Mitchell Schwartz out (they were then both released but haven't ruled out a return), Mahomes was running for his life against a ferocious pass rush.

Needless to say, Kansas City has put in work revamping the line:

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As for the Ravens, they now have two first-round picks in next Thursday's 2021 NFL Draft. Baltimore will be picking 27th and 31st in the first round. The franchise will look to add more talent around star quarterback Lamar Jackson, who's looking for a contract extension.

It appears the Ravens have at least found a replacement for Brown in the form of Alejandro Villanueva, per ESPN's Jamison Hensley.

Baltimore and Kansas City will surely be two of the top contenders in the AFC in 2021, and this trade only makes the arms race more interesting.