The Watkins Glen track is notoriously tricky to master, especially in challenging conditions, and there’s been a whole host of sportscar and prototype racing this weekend so far.
But, with so much going on and a circuit that bites back when things go wrong, we’ve also seen plenty of crashes and incidents.
One of them was this big accident during the IMSA Prototype Challenge race, with Naj Husain running wide and losing control on the kerb, smashing into the barrier.
There was also a monumental crash in the Porsche GT3 Cup race, with two cars tangling and many others being left with nowhere to go.
Some of the impacts really were incredibly nasty.
It was a combined race with the USA and Canadian series, with some drivers being checked and released from the medical centre and a few being taken to hospital for further evaluation.
The second IMSA Prototype Challenge race on Saturday featured very, very wet conditions. Not ideal, and it made for rather chaotic on-track action.
That included a crash on the restart between the leading car Colin Thompson, who spun at the final corner, and Don Yount – who dived to the inside, but got collected.
Earlier on there were also some bizarre crashes behind the safety car, including two drivers losing control and hitting the barrier.