Thomas knows he will have to stand out at the Stadio Flaminio to keep Ospreys star Jones out of the Triple Crown and potential championship decider against Ireland on 21 March in Cardiff .
Thomas is the only Welsh - based player in action last weekend .
Thomas , the only Welsh - based player in action last weekend , knows he will have to stand out at the Stadio Flaminio to keep Ospreys star Jones out of the Triple Crown and potential championship decider against Ireland on 21 March in Cardiff .