Rory McIlroy questions validity of LIV Golf again as he prepares for US Open

• McIlroy: LIV means nothing apart from a ton of money'
• DP World Tour to set out position on LIV Golf very soon

Rory McIlroy has again questioned the sporting validity of the rebel LIV Golf Series, two days after taking a swipe at Greg Norman in the immediate aftermath of his Canadian Open victory.

The first event of the LIV scheme, backed financially by Saudi Arabia and fronted by Norman, took place last week in Hertfordshire. The build-up to the US Open, which begins at Brookline on Thursday, has been dominated by chatter about this great disruption plan. McIlroy remains a firm advocate of the existing ecosystem.