A major incident in the NASCAR O’Reilly Auto Parts Series race at San Diego on June 20 led to heavy damage after a Lap 35 final-stage mistake triggered a multi-car wreck.
Sam Mayer misjudged his entry into the corner and struck the inside wall, which sent his car into Anthony Alfredo and forced both vehicles into the outside barrier.
The impact was so severe that the temporary wall shifted nearly a meter. With the field tightly packed after only a few corners at full speed, drivers had little room to react, triggering a massive multi-car pileup behind them.
The chain reaction involved at least 23 cars, according to The CW, prompting NASCAR to immediately red-flag the race.
Both Mayer and Alfredo were evaluated and later released from the medical center, though Jeff Gluck of The Athletic reported on X that Alfredo appeared to be limping afterward.
This story is being updated.
