Australian fast-food chain Grill'd has responded to reports of an Oscar Piastri 'curse' after the brand changed its campaign about the McLaren Formula 1 driver.<br>The food chain changed its promotion surrounding Piastri after he failed to finish on the podium in any race since a third-place finish at the Italian Grand Prix. The campaign promised a free 'bonus' burger every time the 24-year-old ...<a class='more' href='https://www.motorsport.com/f1/news/australian-burger-brand-grilld-responds-to-oscar-piastri-curse-with-tongue-in-cheek-apology/10776398/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=www'>Keep reading</a>