A couple of nagging doubts will have settled, after Treesa Jolly and Gayatri Gopichand finish the season on World No 11, on the cusp of the Top 10. One, that the pairing works – they win big matches, and the combination doesn’t need dehyphenating, though like wailing banshees, the cries will play on loop whenever they lose. And secondly, that a hard-working Indian coach, Arun Vishnu, can click and get you wins at the topmost level. Though Friday’s loss, and exit from the World Tour Finals also means there’s humongous work left to be done. Japanese World No 4 Chiharu Shida, can be said to have single-handedly driven a neat wedge into the Indian defense, as the Indians were taken apart 21-17, 21-13 in their final group game. Matsuyama, the weaker link on the day, was peppered by both Indians, but the extremely skilled slinger Shida had all the counters and a lot of combative spunk as she scythed, sliced and arrow-smashed to leave the young Indians gasping. Treesa-Gayatri finished with the fortifying win over …