Nascar

IndyCar rookie Sage Karam defends himself in wake of Carpenter criticism

FILE - In this July 18, 2015, file photo, Sage Karam (8) leads Ed Carpenter during an IndyCar Series auto race at Iowa Speedway in Newton, Iowa. Karam won't win the IndyCar title this season. But the Chip Ganassi rookie might push for the championship before long based on his recent performances _ including his first podium last weekend in Iowa.  (AP Photo/Charlie Neibergall, File)

FILE - In this July 18, 2015, file photo, Sage Karam (8) leads Ed Carpenter during an IndyCar Series auto race at Iowa Speedway in Newton, Iowa. Karam won't win the IndyCar title this season. But the Chip Ganassi rookie might push for the championship before long based on his recent performances _ including his first podium last weekend in Iowa. (AP Photo/Charlie Neibergall, File)  (The Associated Press)

IndyCar rookie Sage Karam's biggest step forward was overshadowed by altercations with veteran Ed Carpenter

Karam wasn't penalized by IndyCar for his driving. Carpenter wasn't penalized for losing his temper.

But the incident put Karam in the brightest spotlight of his burgeoning career.

Carpenter said after the race that Karam "didn't have a clue." Karam maintains that he wouldn't change a thing if he had to race the final 20 laps over again, and he finished third in Saturday's race at Iowa.