Phil Mickelson hits out at 'worst liar and pathetic human' Alan Shipnuck over author's report that the lefty claimed LIV Golf's signing of Masters champion Jon Rahm was a 'done deal'

Phil Mickelson came out swinging after golf writer Alan Shipnuck claimed the golfer had been telling people that Jon Rahm was headed to LIV Golf. 

Shipnuck posted to social media Wednesday that the lefty has privately been telling people that Masters champion Rahm's defection to LIV Golf was a 'done deal'.

However, 53-year-old Mickelson jabbed back publicly, hitting back on social media.

'This isn’t true and I don’t know anything,' Mickelson responded. 'I don’t want to know anything and I haven’t said anything. Alan is the worst liar and a pathetic human.'

Rahm and Mickelson share an agent, Steve Loy, and Shipnuck said the lefty is a 'relentless salesman/bulls*** artist, so take that for what it's worth' before Mickelson responded to the report himself. 

Shipnuck retorted to Mickelson's denial a few hours later. 

'I guess Phil tweeted at me? I wouldn’t know since he’s blocked me in a classic tough-guy move,' Shipnuck posted to X. 'But we all know that what he says publicly and privately are *very* different.'

While a Rahm move to LIV Golf has been rumored for some time, Mail Sport reported sources close to the 29-year-old firmly dismissed the switch from the PGA Tour.

However, prominent players from LIV are privately optimistic that the Spaniard could be swayed by the lucrative, mega-million-dollar offered the breakaway has previously used to successfully lure some of golf's biggest names away from the PGA Tour. 

Those rumblings were  followed by a report from golf outlet Bunkered on Wednesday that said the reigning Masters winner is in negotiations with Greg Norman's circuit. 

Rahm is currently the No. 3-ranked golfer in the world behind Scottie Scheffler and Rory McIlroy. 

Shipnuck and Mickelson have a history of clashing after the author reported that the six-time major winner referred to the Saudis as 'scary motherf*****s' last year. 

Shipnuck published the novel 'Phil: The Rip-Roaring (and Unauthorized!) Biography of Golf's Most Colorful Superstar' last May. 

He also wrote the book 'LIV and Let Die: The Inside Story of the War Between the PGA Tour and LIV Golf,' which was released last month. 

As part of Shipnuck's reporting was a conversation where Mickelson called LIV Golf 'manipulative and coercive.' Mickelson thought the conversation was private, not for the world to hear. 

Mickelson and Shipnuck have been at odds since, with the rumors surrounding Rahm representing the latest chapter.