Rosenqvist and Rossi had already swapped places through Turn 1 and Turn 2 with four laps to go, but on the penultimate tour they raced wheel-to-wheel again, this time at Turn 3.
Rosenqvist lunged to the inside, where Rossi pinched him towards the apex. After rounding the corner side by side, they touched – Rosenqvist’s right-rear to Rossi’s left-front – and Rossi was sent into the wall.
He then lost fourth place to Scott Dixon, who took advantage of his loss of momentum by driving around the outside of him at Turn 4.
Rossi, who had previously gained two spots when Will Power and Dixon clashed, said he was “happy with everything” but shut down a question about the incident with his team-mate.
“I think we got given those spots, kind of inherited second, and then ended up back where we started,” Rossi told NBC. “It was a good day overall, I think the pace was good the team did an amazing job with strategy, that was right. I’m happy with everything.”
But when pushed on whether it was good racing with Rosenqvist, he replied: “We’ll discuss it internally.”
Source: Autosport