When you're trying to make an NFL team as a tight end or a wide receiver, it helps to have some chemistry with the starting quarterback, which is why Graham Walker might have a leg up on the competition during Kansas City's rookie minicamp this week.

The Kansas City Chiefs are exploring whether another Mahomes can make an impact on their roster — this time in the form of Graham Walker, the lesser-known half-brother of Patrick Mahomes. Walker, who shares the same father as the Super Bowl MVP quarterback,