Corey Heim and Carson Hocevar have become two of NASCAR’s brightest young stars. After blending back onto the track behind the race-leading Heim, Hocevar found himself pinned behind the 23XI Racing driver, who used aerodynamic blocking to keep the No. Their rivalry has been building for yearsThe friction between Heim and Hocevar didn’t begin in the Cup Series. Later in the race, Heim returned the favor, laying the foundation for what has become one of NASCAR’s most talked-about rivalries. At the inaugural Cup race on the streets of San Diego earlier this season, Heim bumped Hocevar in the closing laps before driving away for his first Cup Series victory.