It was the competition Palace initially thought they had qualified for after the Austrian, who managed his last Eagles match.
The 21-year-old has again started the season strongly for the ever-impressive Haas team.
Lawes retired from Test rugby after the 2023 World Cup but his ambitions of returning to the global stage have been rekindled.
Sciver-Brunt missed the series win over New Zealand with a tear in her left calf.