Official sponsors get to put National Football League team logos all over their products, get to tout Super Bowl 51 and get access to huge television audiences all year long. But the NFL doesn't forbid rival companies from buying ad time with 2017 Super Bowl broadcaster Fox, which leaves those official sponsors open for an ambush. 

Here's a look at Super Bowl sponsors who'll face some heavy-hitting competitors at the big game: Hyundai, Kia  (KIMTF)  , Pepsi (PEP - Get Report)  and Procter & Gamble  (PG - Get Report) .

This article was written by a staff member of TheStreet.