STAMFORD, Conn. – March 17, 2021 – This Saturday, NBC Sports will present the 12 Hours of Sebring from Sebring International Raceway, beginning at 10 a.m. ET on NBCSN. The IMSA endurance race features a collection of racing superstars from across the world including Jimmie Johnson, Scott Dixon, Alexander Rossi, Juan Pablo Montoya, Simon Pagenaud, Sebastien Bourdais and Kevin Magnussen, among others. (more…)