Zach Johnson and Billy Horschel clash with spectators at Phoenix Open

It was not apparent from the clip, which was posted on social media, what prompted the former US Ryder Cup captain to lose his temper.

Former Ryder Cup captain Zach Johnson was not happy with the behaviour of some fans during the WM Phoenix Open. Pic: Zac Goodwin/PA

Zach Johnson and Billy Horschel exchanged angry words with spectators as tempers frayed on the final day of the WM Phoenix Open.

Johnson was filmed remonstrating with fans at TPC Scottsdale and could be heard telling them “I’m sick of it” before demanding they “just shut up”.