Ideally, if you're a pro tennis player, you're playing in a final on a Sunday afternoon. It might be kind of hard to concentrate if your favorite NFL team is in action that day. Here's a look at tennis' own "gridiron gang."

1

Brad Gilbert, Oakland Raiders

Gilbert is a fan of every sport out there, with particular devotion to the Bay Area teams. The proud member of “Raider Nation” is right there with his team, through the good and bad, which there’s been a lot of in recent years. This season, though, looks to be the start of something big for the Black and Silver. Gilbert is there to provide a running commentary online every game, running the gamut of emotions, like after the team’s win last week: 

2

John Isner, Carolina Panthers

Watching football is one of his favorite pastimes, with his college allegiance going toward his alma mater, the University of Georgia, and his pro leanings toward the Carolina Panthers. Isner’s a die-hard fan, and has gotten some up-close viewings in the past:

 

#GoDawgs and #KeepPounding . 14-1 ain't bad. @td58 @cjgeorgia99

A photo posted by John Isner (@johnrisner) on

3

Bethanie Mattek-Sands, Green Bay Packers

Mattek-Sands bills herself as a “Cheesehead 4 Life” in her Twitter bio, letting anyone and everyone know where her loyalties lie. Such super-fandom can even get you attention from the object of your affections, especially after a major accomplishment: 

4

Ryan Harrison, New Orleans Saints

The Louisiana native has nothing but love for the 2009 Super Bowl champions. The season opener this year had him raring to go (and start the trash talk with Isner): 

The Saints let Harrison know he’s always welcome: 

5

CoCo Vandeweghe, San Diego Chargers

California is rife with pro football teams, but for Vandeweghe, supporting the Bolts is the only way to go:

 

Thanks for the field access @chargers ! Now it's time to enjoy the game! #BoltUp #SandiegoSuperChargers

A photo posted by CoCo Vandeweghe (@cocovandey) on

6

Mardy Fish, Minnesota Vikings

The Minnesota native has watched his team storm to the top of the standings in its division this year, despite injuries to some of its top players.

He’s on top of the franchise’s moves, like when the team made a splash in free agency this past off season, signing offensive tackle Jake Long: 

Mardy welcomed the four-time Pro Bowler with open arms—and an open court: 

7-8

Venus & Serena Williams, Miami Dolphins

When you have part ownership of an NFL franchise, you better believe you’re going to be a fan of said team.