Simply the best. That’s the only description for the other-worldly nine-under-par 62 American Matt Kuchar shot over the notoriously difficult Serapong course at Sentosa Golf club in the third round of the SMBC Singapore Open on Saturday. Kuchar was dialled-in with long, accurate driving, pinpoint approach shots and heat-seeking putts. Indeed, employing his trademark arm-lock putting style that he has …