[caption id="attachment_554643" align="aligncenter" width="628"]<img class="size-full wp-image-554643" alt="Yasir Shah has 116 Test wickets in 20 matches Getty Images" src="https://www.cricketcountry.com/wp-content/uploads/2016/12/Yasir-Shah-bowls.jpg" width="628" height="355" /> Yasir Shah has 116 Test wickets in 20 matches Getty Images[/caption] <p></p> <p></p><strong>Cairns</strong>: Pakistan leg-spinner <a href="https://www.cricketcountry.com/players/Yasir-Shah" target="_blank">Yasir Shah</a> has been ruled out of the warm-up game against Cricket Australia XI due to a back injury. Yasir hurt his back during a training session at the Cazaly's Stadium in Cairns and is now battling to be fit for the first Test of the three-match series against Australia beginning December 15 at the Gabba. According to the <em>ESPNcricinfo</em>, Yasir is being treated by a doctor in Cairns, and has been advised a few days' rest. Yasir, who made his debut in October 2014, has quickly developed into Pakistan's first-choice spinner and has so far missed just one Test, which was against England in Abu Dhabi in October last year due to back spasms. <p></p> <p></p>In July, he became the first leg-spinner since Shane Warne to be ranked the No. 1 Test bowler, and also the first Pakistan bowler since Mushtaq Ahmed in December 1996 to achieve the feat. Pakistan will play a three-day tour game against CA XI from December 8. <p></p> <p></p><a href="https://www.cricketcountry.com/series/pakistan-in-australia-2016-17-200382/live-scores/australia-vs-pakistan-1st-test-match-181142-summary.html" target="_blank"><strong>Full Cricket Scorecard: Australia vs Pakistan 1st Test at Brisbane</strong></a> <p></p> <p></p>Only last year, Warne was quoted as saying that Yasir was the best leg-spinner in the world . I have always been a fan since the first time I saw him a while ago probably the best leg-spinner in the world, the way the ball comes out of his hand. It was a fantastic opportunity to work with Yasir. He has said, further adding, He is a wonderful bowler beautiful so we just worked on thinking who he has been having troubles with in the England side, some tactics and plans. He wants a bit more drift and bounce and little things that can help. I hope by the end of the series he will be bowling beautifully with a huge smile on his face.