Premiership Rugby will conduct an "urgent review" ahead of Sunday's top-flight fixtures in England after 16 Sale players tested positive for the coronavirus. Sale want their crucial meeting with Worcester to go ahead to avoid forfeiting the game. That would mean a 20-0 defeat and potentially jeopardise Sale's hopes of a top-four finish. But Premiership chiefs said the entire weekend programme is under review following the outbreak, while the governing body says it has been made aware of positive tests at other clubs. Those results will be studied and may determine whether any of the matches on the final weekend of the regular season can proceed. Darren Childs, chief executive of Premiership Rugby, said: "The health and well-being of our players and staff is our priority. "More than 900 PCR Covid-19 screening tests were carried out on Thursday. On Friday we received the results, which was followed by a comprehensive contact tracing programme at our clubs, created by those positive tests. "These results are being analysed with the help of Public Health England and the local health authorities involved. This will allow a decision to be made over the Sale Sharks v Worcester Warriors match, and any others that have been affected by positive results. "We understand the stakes are very high this weekend but we have a responsibility to everyone involved with Premiership Rugby to ensure a methodical process is followed, and this cannot be rushed." Childs' comments in a Premiership Rugby statement came just an hour before the teams were due to be announced on Saturday at midday. While Sale were optimistic, Worcester were more reticent. "Warriors' final Gallagher Premiership match of the season against Sale Sharks at the AJ Bell on Sunday is still the subject of discussions between Premiership Rugby and public health officials," a statement read. "A significant number of Sale players and staff tested positive for Covid-19 on Thursday and have been retested as part of a rigorous process that applies to all clubs and which has been in place since before the 2019-20 season resumed in August. "The sole criterion for deciding whether a match can take place in the current unprecedented and worrying circumstances is the safety of officials and players and staff of both clubs and the risk of anyone contracting and spreading this killer disease. "Warriors would always prefer the outcome of a match to be decided on the pitch and will do so provided we are satisfied that all the Covid-19 protocols and procedures have been followed and no health risk is posed to our players and staff. "At the moment we are still awaiting confirmation that those protocols and procedures can be met to allow Sunday's match to proceed as scheduled." smg/pb