They are two of the most passionate fan bases in all of MLS and on Sunday afternoon they'll share the national network television stage.

The FOX broadcast network will air an MLS Week 29 doubleheader on Sunday and both matches – from sold-out Children's Mercy Park in Kansas City and Mercedes-Benz Stadium in Atlanta – will also have massive ramifications in the race to the Audi 2017 MLS Cup Playoffs.

Sporting Kansas City vs. LA Galaxy (2 pm ET)

Watch: FOX (English), FOX Deportes (Spanish), FOX Sports GO app (in US), MLS LIVE (in Canada)

In the following cities the match will air on these channels:

Kansas City: FOX Sports Kansas City Plus and FOX Sports Midwest Plus

FOX Sports Kansas City Plus and FOX Sports Midwest Plus Los Angeles: My13

My13 San Diego: antenna TV

antenna TV Seattle: JOEtv

Sporting KC vs. LA Galaxy will be carried in each of the home markets as well as other select markets around the country (see areas in blue on map above), while the rest of the nation will get an NFL game on the network.

What to watch for: Sporting Kansas City will be shifting their focus to the playoff stretch run after winning the 2017 U.S. Open Cup title on Wednesday. They get set to host another team playing on short rest with the Galaxy still licking their wounds from a second 4-0 battering in less than a week at the hands of Atlanta United. While Sporting are jockeying for playoff seeding in a tight Western Conference, the Galaxy will look to play spoilers while hoping to stave off mathematical elimination for a few more weeks.

Atlanta United vs. Montreal Impact (5 pm ET)

Watch: FOX (English), FOX Deportes (Spanish), TVAS (Canada), FOX Sports GO app (US)

In the following cities the match will air on these channels:

Charlotte: My12

My12 Green Bay: CW 14

CW 14 Minneapolis: My29

My29 Salt Lake City: antenna TV

antenna TV Tulsa: My41

Atlanta vs. Montreal will air on FOX in Atlanta and other markets around the country, while the rest of the nation will get NFL games on the network (see areas in red on map above). In Montreal, the game will be available on TVAS.

What to watch for: The match promises to be a high-scoring affair with Atlanta scoring at an eye-watering rate in their new digs (17 goals in four games), while the Impact just put a five-spot of goals on Supporters' Shield leaders Toronto FC in their midweek outing. An upset win for Montreal would move them into a tie for the sixth and final playoff spot in the East, while three points for the home side will see them leap into third place in the Eastern Conference.