Harlequins will be without Marcus Smith and James Chisholm for the Big Game 13 clash against Northampton due to Covid-19.
The club announced that the pair had tested positive for the virus on Boxing Day. Twickenham is set to host the match on Monday.
A club statement said: “Harlequins fly-half Marcus Smith and backrow James Chisholm both tested positive for COVID-19 via a PCR test earlier this week.
“Due to health and welfare regulations all players must observe a clear graded return to match intensity fitness following a positive COVID-19 result before returning to match action.
“Unfortunately, there was not enough time for either player to pass through these protocols before Big Game 13, and are therefore unavailable for selection for this fixture.
“Both are expected fit for the club’s Gallagher Premiership fixture away to Gloucester on January 2.”
Quins also announced that Viliami Taulani will replace Dino Lamb in the 20 jersey for the match.
