By Rich Jones Jon Rahm has revealed he had no choice but to snub Phil Mickelson from discussions over joining him in LIV Golf in a record-breaking move. Rahm has confirmed he has accepted a lucrative deal – believed to be the biggest in golf history – to join Mickelson in the Saudi-funded golf league. While he remained coy on the details, he’sreported to have earned a £450million deal thanks to a huge signing fee to join Mickelson and co. Mickelson has been a leading figure since being one of the first players to ditch the PGA Tour and lead the LIV-led revolt among the sport’s top stars. But R…