Captain Joe Root says England have the opportunity to “stand up in adversity” amid their Ashes defeat and Covid complications. England are 3-0 down going into the fourth Test in Sydney on Wednesday. Head coach Chris Silverwood is one of a number of staff in isolation, while coaching reinforcements and net bowlers have been withdrawn because of Covid. “It has made things disjointed and challenging but it is a chance to come together,” Root told BBC Sport. Along with Silverwood, pace bowling coach Jon Lewis, spin bowling coach Jeetan Patel and strength and conditioning coach Darren Veness are absent.