Pakistan supplanted arch rivals India to become the world's number one Test side on Monday for the first time since the International Cricket Council (ICC) introduced the rankings system in 2003.
Rangana Herath became the first Sri Lankan spinner to bowl a hat-trick in Test cricket to put Australia in deep trouble in their match in Galle on Friday.
Mohammad Amir completed his return to Test cricket by taking the final wicket of the match as Pakistan beat England by 75 runs on the fourth day of their series opener at Lord's on Sunday.
