Round 3 of the 2014-2015 Masters of Endurance season, the 24 Hours of Spa-Francorchamps supported by Blue Flag Racing. Hours 19, 20, and 21. Commentary by Phil Diaz, Oscar Hardwick, Lewis McGlade, and Michael Passingham br br Masters of Endurance is sponsored by the following: Blue Flag Racing - -- Derek Speare Designs - -- Grand Prix 247 - -- iGP Manager - . Masters of Endurance uses the iRacing simulation game.