Despite ensuring a so-called tightest bio-bubble to avoid Coronavirus infection, two players of Kolkata Knight Riders (KKR) have been tested positive for Covid-19. And as a result, the clash between and Royal Challengers Bengaluru (RCB) which was scheduled to take place on Monday, has been postponed.  Read Also: Covid-19 concerns: Ashwin, Zampa, Richardson, Tye leave IPL The IPL authority has conducted four Covid-19 tests for the players of KKR in the last four days. In the last test, Varun Chakaravarthy and Sandeep Warrier were found to be positive, confirmed an IPL press release.  Both the players are now isolated from the rest of the members of the team. After this incident, the KKR authority took initiative to test all the members every day to find out if anyone else is infected with the deadly virus.  The IPL medical team is working to determine the close and casual contacts of those two players in an endeavour to avoid further health issues. This is the first instance of a Covid-19 positive case related to IPL.  Read Also: Delhi, Mumbai record identical 7-wicket victories in IPL India is one of the worst hit countries . In the last few weeks, they have recorded more than 3 lakh cases and more than 3000 deaths  per day.