Offensive line is a strength shared by the four conference finalists. Here’s a look at how the Chiefs, Patriots, Saints and Rams acquired their 20 starting linemen:
Drafted 10
Trades 3
Street free agent 1
Rookie free agent 1
Average age 27.6
Patriots 4; Rams 2
First 4 (3 by current team)
Second 6 (3 by current team)
Third 3 (2 by current team)
Fourth 1 (1 by current team)
Fifth 1 (1 by current team)
Sixth 1 (0 by current team)
Seventh 2 (0 by current team)
Undrafted 2 (1 by current team)
A closer look at the …
Rams: Despite having the two oldest linemen — 2017 unrestricted free-agent signings Andrew Whitworth, 37, and former Vikings center John Sullivan, 33 — they have the only fivesome that didn’t miss a start in 17 games.