NFL Championship Sunday unit ranking: Top offense? Most imposing defense? Plus, 5 draft steals to watch - NFL.com

With Reid supporting his quarterback with a blue-chip offensive line and two underrated backs (scrappy Isiah Pacheco and receiving threat Jerick McKinnon), the Chiefs routinely out-schemed opponents en route to their fifth straight AFC Championship Game appearance.

When Shanahan moves around Christian McCaffrey, Deebo Samuel, Kyle Juszczyk, George Kittle and Brandon Aiyuk as key pieces on the chessboard, he simplifies the game for his rookie quarterback, Brock Purdy, who has played at a high level since stepping in for Jimmy Garoppolo in early December.

With Miles Sanders also pitching in as a 1,200-yard rusher possessing speed, quickness and wiggle, the Eagles' offense is balanced and explosive, utilizing a college-like attack that features a mix of option plays, RPOs and designed quarterback runs to keep defenders on their heels.

Executives, scouts and coaches spend countless hours preparing for the NFL draft each year, hoping to add a handful of key contributors to a roster that eventually competes for a championship.

While most of the attention is focused on the top picks who are expected to vie for starting roles in Year 1, the developmental prospects drafted on Day 3 (Rounds 4-7) can emerge as surprise playmakers on title contenders.

The rugged runner has the third-most rushing yards (728) in the league since Week 10 (including playoffs), exhibiting a combination of speed, power and burst that has added a dimension to the Chiefs' ground attack.