Madden NFL 21 adds new traits to the best players in the NFL known as X-Factors.
These separate these players, given them boosts to throwing, tackling, coverage, and more. It's a smart system, but you may be wondering how you use them.
Madden NFL 21: How To Use X-Factors
There's no real way to "use" X-Factors, as they're essentially passive buffs to the game's best players in a specific situation.
Take, for example, Patrick Mahomes. His "Bazooka" X-Factor adds 15 yards onto his maximum throw distance up to 80 yards, so as long as you're throwing within that range, the X-Factor will be used.
That applies to defensive players, too. You can check your team's X-Factors on the team-select screen, so be sure to do your research!