Just the facts: Everything you need to know for today's Chase race

TALLADEGA, AL - MAY 02: A sign is seen during practice for the NASCAR Sprint Cup Series Aaron's 499 at Talladega Superspeedway on May 2, 2014 in Talladega, Alabama. (Photo by Mike Ehrmann/Getty Images)

The day many drivers and teams have been losing sleep over is finally here. It's Chase elimination day at Talladega Superspeedway.

At the end of Sunday's CampingWorld.com 500, four drivers will be eliminated from the Chase, while eight drivers will continue their championship quest for at least another three weeks.

There are plenty of unknowns heading into Sunday's race, but it's sure to be intense and nail biting throughout. The threat of the "Big One" is very real, as is the possibility of an unexpected winner.

While there are unknowns surrounding what will happen once the green flag flies, here is everything you need to know about the Chase elimination race at Talladega:

Green flag:

2:49 p.m. ET

Grand marshal:

Marcus Lemonis, chairman and CEO of Camping World and Good Sam

Honorary starter:

Marcus Lemonis

Flyover:

B-2 Stealth Bomber, Whiteman AFB, Missouri

Forecast:

According to weather.com, the forecast for Sunday is calling for overcast skies with a high at 79 degrees. There is a zero percent chance of rain with light and variable winds.

Defending race winner:

Brad Keselowski. Full race recap here.

May race winner:

Dale Earnhardt Jr. Full race recap here.

Fastest in Practice 1:

Greg Biffle. Full practice recap here.

Fastest in Final Practice:

Brad Keselowski. Full practice recap here.

Chase standings:

1. Joey Logano: 3,095*

2. Denny Hamlin: 3,082

3. Kurt Busch: 3,077