By David Anderson Conor Bradley believes he can win his battle against Liverpool pal Andy Robertson at Hampden Park on Tuesday. Bradley is Northern Ireland’s new star and the right-back is excited about facing Robertson and Scotland in tonight’s friendly. He says his Reds colleague is one of the top left-backs in the world and is relishing testing himself against him on their wing. But it is typical of the bullish Bradley that he reckons it is a showdown he can win. “I think it could be a good battle,” said Bradley. “It’ll be brilliant for me to test myself against one of the best left-backs i…