Dale Earnhardt Jr. will donate brain to concussion research

NASCAR drivers respect Dale Earnhardt Jr.'s legacy

NFL players on the dangers of concussions and CTE

Dale Earnhardt Jr.: His legacy in his own words

Dale Earnhardt Jr. returns to the track

Dale Earnhardt Jr. explains decision to retire

Dale Earnhardt Jr. to miss rest of 2016 season

Why Dale Earnhardt Jr. chose now to retire

Will Dale Earnhardt Jr. win at Richmond?

Fans react to news that Dale Earnhardt Jr. will retire

Dale Earnhardt Jr. locks up post-racing gig

Darrell Waltrip discusses Dale Earnhardt Jr., Daytona 500

Dale Jr. on NASCAR rule changes: 'Everybody just chill'

Dale Jr. reflects on final races of NASCAR career

Do NFL players think about concussions?

100-plus concussions went unreported from 1996-2001

Chiefs safety Husain Abdullah retires after multiple concussions

Gisele Bundchen says Tom Brady has had concussions

Olympian hopes more female athletes will donate their brains for concussion research

NFL 'improperly attempted to influence' concussion research

Martin Truex Jr. wins his first NASCAR Cup championship

Dale Earnhardt Jr. on Retiring from Racing

Dale Earnhardt Jr. Built His Own Old West Town and Tree House (Jimmy Kimmel)

Guy With A Coonskin Cap Gets Interviewed

Relive Dale Earnhardt Jr.’s Daytona 500 wins, celebrations

Ryan Blaney Has The Best Drinking Stories With Dale Earnhardt Jr.

Dale Jr. on Martinsville finish: Playoffs ‘are made to make these moments’

World Cup: Four hungry teams enter semifinals

France, Belgium move on to World Cup semifinals

Fitness model attempting 50 Ironmans in 50 days

Joey Chestnut and Miki Sudo win 2018 Nathan’s Famous Hot Dog Eating Contest

Quarterfinal matches filled with teams looking to make history

Massive LeBron James billboard coming down in Cleveland