Russell had started the season as the bookmakers’ favourite to land his maiden crown, but he has since been usurped by 19-year-old Antonelli.
The Masters champion is playing only his sixth regular PGA Tour event of the year.
Lawes retired from Test rugby after the 2023 World Cup but his ambitions of returning to the global stage have been rekindled.
Robinson spent two years fearing his international career was over.