Jon Rahm was visibly furious with someone in the crowd for the second round of LIV Golf’s UK event at the JCB Golf & Country Club before his caddie stepped in to call them a ‘d***head’. Rahm was LIV Golf’s most high-profile signing before the new season began earlier this year in a huge switch from the PGA Tour. He’s cut an agitated figure at times in his debut season on the new tour, including lashing out at the use of drones during the Nashville event last month. The 29-year-old is still waiting for his first win on the LIV Tour but made a strong start at the JCB Golf & Country Club on Frida…