There may not be a more punishing course on the PGA Tour than Oakmont, and while several golfers have battled their way through 36 grueling holes between Thursday and Friday, few wear their emotions as openly as Rory McIlroy.

Rory McIlroy repeated at the US Open a controversial conduct criticised by fans and media. The 35-year-old posted a 41 over his closing nine holes, ultimately signing for a four-over 74 in Thursday’s opening round.

While much ado has been made about a bitter McIlroy's resentment towards LIV Golf players, his relationship with Koepka is more of a friendship that has had its rifts.

Rory McIlroy suffered his worst PGA Tour finish at RBC Canadian Open, missing the cut amid equipment struggles and backlash from fans.

Several high-profile golfers have opted not to speak to the media during recent tournaments. But Rory McIlroy’s decision to do so is particularly “concerning” for the PGA Tour, according to Golf Channel reporter Rex Hoggard.

Something is eating Rory McIlroy. How does a guy go from the pinnacle of professional fulfillment to the petulant, club-throwing, tee marker-smashing anger ball that’s been stomping around Oakmont Country Club the last two days?

Things went wrong for Rory McIlroy at the RBC Canadian Open as he posted a ridiculous number to miss the cut and nearly finish dead last.