Romain Grosjean fired expletives at Santino Ferrucci for a second instalment of on-track wheel-banging in one day as tensions flared in the Indianapolis road course IndyCar race.

Ferrucci and Grosjean came together side-to-side on the run to Turn 12 during the pre-race warm-up/final practice, which led to Ferrucci raising his middle finger out of his cockpit at Grosjean.

“He drove into me at Barber [the previous IndyCar race] in the warm-up for no reason, and I’m just simply returning the favour, my friend,” AJ Foyt Racing driver Ferrucci told NBC. He later added the feud didn’t go further back than Barber.