Solution to 5: Fix My Jerseys

These are all NFL Jerseys with current MLB Players on them from the same city. We take the number of that MLB player and convert it to a letter using A=1, B=2, etc.:
Justin Turner plays for the LA Dodgers as #10 -> J
Isan Diaz plays for the Miami Marlins as #1 -> A
JP Crawford plays for the Seattle Mariners as #3 -> C
Jose Ramirez plays for the Cleveland Indians as #11 -> K
Chris Davis plays for the Baltimore Orioles as #19 -> S
Sean Newcomb plays for the Atlanta Braves as #15 -> O
Christin Stewart plays for the Detroit Tigers as #14 -> N

This spells out Jackson. Entering this answer will prompt you to figure out "Which one?". Jackson in this case refers to Bo Jackson, a famous athlete who became an all star in both the NFL and MLB so the answer is Bo.

BO