Jen Welter is a trailblazer — first in the Indoor Football League, and now the NFL. Arizona Cardinals hire Jen Welter as first female NFL coach http://t.co/R2ewHYFyBs pic.twitter.com/v1JHMb2vqi — Los Angeles Times (@latimes) July 28, 2015 Earlier this year, Welter was an assistant coach of the Indoor Football League's Texas Revolution, and believed to be the first woman to coach in a men's professional football league.