Dustin Johnson hopes for Ryder Cup rethink after calling time on PGA Tour

• Johnson joining Garcia in resigning will rule him out of US team
• Oosthuizen and Schwartzel also terminate PGA membership

The golf world was still reeling from the shock of Sergio Garcia's resignation from the PGA Tour as Dustin Johnson used a sunny morning on the outskirts of Hemel Hempstead on Tuesday to calmly announce he had done likewise.

The impact of the Saudi Arabia-backed LIV Golf Series, which begins with a $25m (19.85m) event here on Thursday, continues to reverberate. Nothing is happening in isolation. Hot discussion now surrounds whether Garcia and Johnson, synonymous with the Ryder Cup for their teams, can remain as a part of the biennial event.