Jimmie Johnson to make Indy 500 debut - for NBC Sports
IndyCar driver Jimmie Johnson (48) signs the shirt of fan Caroline Gast of Sarasota after the morning practice session at the Grand Prix of St. Petersburg auto race, Sunday, April 25, 2021 in St. Petersburg, Fla. (Luis Santana/Tampa Bay Times via AP)

IndyCar driver Jimmie Johnson (48) signs the shirt of fan Caroline Gast of Sarasota after the morning practice session at the Grand Prix of St. Petersburg auto race, Sunday, April 25, 2021 in St. Petersburg, Fla. (Luis Santana/Tampa Bay Times via AP)

Apr. 25, 2021 03:49 PM EDT
In this image provided by IndyCar, seven-time NASCAR champion Jimmie Johnson,left, speaks to four-time Indianapolis 500 winner Rick Mears before the first IndyCar practice session of the season, Saturday, April 17, 2021 at Barber Motorsports Park in Birmingham, Ala. Johnson will be an IndyCar rookie this season and make his series debut in Sunday’s opener. Mears was his childhood hero. (Joe Skibinski/IndyCar via AP)

In this image provided by IndyCar, seven-time NASCAR champion Jimmie Johnson,left, speaks to four-time Indianapolis 500 winner Rick Mears before the first IndyCar practice session of the season, Saturday, April 17, 2021 at Barber Motorsports Park in Birmingham, Ala. Johnson will be an IndyCar rookie this season and make his series debut in Sunday’s opener. Mears was his childhood hero. (Joe Skibinski/IndyCar via AP)

Apr. 17, 2021 02:51 PM EDT