Zach Johnson and Billy Horschel clash with spectators at Phoenix Open

The American pair exchanged angry words with onlookers at TPC Scottsdale.

Former Ryder Cup captain Zach Johnson was not happy with the behaviour of some fans during the WM Phoenix Open (Zac Goodwin/PA) (PA Wire)

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”.

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.

In a separate incident, Horschel was seen remonstrating with a spectator for calling out while one of his playing partners, qualifier Nicolo Galletti, was about to hit a shot.

“Buddy, when he’s over a shot shut the hell up man,” Horschel shouted.

“He’s trying to hit a damn golf shot here – it’s our f****** job.”

The WM Phoenix Open is easily the best attended tournament in golf, but the behaviour of some fans has again attracted more attention than the golf itself.

One man was arrested after jumping over the ropes and diving into a greenside bunker on the par-three 16th, where he proceeded to perform ‘snow angels’ in the sand.

Tournament officials were forced to shut spectator gates earlier than planned after being overwhelmed by the turnout and sales of alcohol were temporarily halted.

Former BMW PGA Championship winner Byeong Hun An took to social media to brand the event a “s***show” which was “totally out of control on every hole”.

He added: “Played here multiple times over the years and it was fine until today.”