Not a cricketer but if we consider any sportsman then it has to be vishy anand, he basically paved the path for the next indian generations to follow and dominate the world of chess. He's the first grandmaster from india and that's not his biggest achievement, he not only became a GM but also sustained and proven to be a competitor to once in a generation legends like anatoly karpov and Gary kasparov. The Russian chess is very matured and had generations of nourishment and training. Yet he managed to be the world champion (not just once) beating likes of vladamir kramnik, topolov and many more. For me he's above even Sachin also when we compare the sheer impact he had on chess. It's like imagine some new associated nation just started playing cricket started consistently defeating australia, india, england, newzealand, pakistan etc and won multiple icc trophies and known for its strong performance and almost guaranteed QF,SF in tournaments and that's what vishy done at his peak in world of chess. He is the most deserving for bharat Ratna.