With the hiring of Karina Tovar as a referee in the NFL, there are now four on-field female referees in the league. Tovar joins Sarah Thomas, Maia Chaka and Robin DeLorenzo as the four female on ...

But what about the numbers NFL referees wear? You can see No. 107 ... being worn by officials ranging from Novak’s No. 1 to Robin DeLorenzo at No. 134. Unassigned numbers include 48, 61, 64 ...