Former India captain Sourav Ganguly backed ace off-spinner Ravichandran Ashwin to play 100 Test matches and finish with 500 to 600 wickets in the longest format.Ashwin, who on Monday, beat Australia legend Dennis Lillee’s record to become the fastest to reach the 300-wicket mark in Test cricket, starred in India’s innings and 239-run victory against Sri Lanka in Nagpur. He finished with eight wickets for 130 runs in the second Test at Nagpur, picking up a four-wicket haul in each innings.Talking to India Today, Ganguly said that Ashwin is on top of his game and he thinks the Tamil Nadu tweaker will end up with more than 500 wickets when he finishes his career.300th Test wicket for @ashwinravi99 and #TeamIndia take a 1-0 lead in the 3-match Test series. India seal the 2nd Test in Nagpur by an innings and 239 runs #INDvSL pic.twitter.com/mq56alEczD- BCCI (@BCCI) November 27, 2017″It’s a fantastic achievement in 50-odd Test matches. 300 wickets in 54 Test matches is a phenomenal record. Congratulations to him. He will go on to play 100 Test matches for India without a doubt and he can finish with 500-600 Test wickets. So it’s a remarkable achievement,” Ganguly said.WATCH FULL VIDEO”You can see the difference in class on the same pitch, you know. The Sri Lankan bowlers bowled…Rangana Herath and Dilruwan Perera and then you saw Ravichandran Ashwin on that surface. He just looked in a different league. Right from the top, a bit of bounce, little bit of grip from the surface. The accuracy and the control is remarkable. So congratulations to him and many many more to come,” he added.advertisementIn just 54 matches Ashwin managed to take 300 wickets beating Lillee to the milestone by two Tests, who did so in 56 Tests. Lahiru Gamage was his record 300th scalp, as the ball tickled the off stumps enough to dislodge the bails.Congratulations to @ashwinravi99 on reaching 300 Test wickets, the fastest player to reach the milestone, taking just 54 matches! #INDvSL pic.twitter.com/IW7lzG4ZMd- ICC (@ICC) November 27, 2017Ashwin, who made his debut for India in November 2011, has been India’s main strike bowler in Test cricket over the last three years. The Tamil Nadu off-spinner has not been a regular in India’s limited-overs squads but he Virat Kohli’s go-to-man in Test cricket for the past few years.After picking up only 10 wickets in 2014, he came back with a bang and for two successive years in 2015 and 2016, Ashwin finished as the top wicket-taker in Test cricket. He snared 62 wickets in nine Tests in 2015 and pocketed another 72 from 12 Tests the following year.He has so far picked over 50 Tests wickets again this year might well finish on top for the third year in a row if he has a big haul in Delhi next week.Incidentally, Ashwin had also broken Lillee’s record to become the fastest to 250 Test wickets, during the one-off Test against Bangladesh earlier this year.However, Ashwin remains second fastest to 200 Test wickets after missing an opportunity to equal the mark by one match.Clarrie Grimmett of Australia had reached the 200-wicket club in 36 Tests while Ashwin got there in 37. Lillee is third on the list, having reached the milestone in 38 Tests.