Chatham boxer Robert Caswell is determined to show what he’s about when he fights next month after winning his last match with a broken hand. Caswell won his first eight professional contests before losing to Michael Webber-Kane a year ago in a scrap for the Southern Area super featherweight bout. His comeback against Karl Sampson in May was supposed to be a chance to bounce back. It ended up a painful night, having broken a metatarsal bone in his hand after just two rounds. He went on to a points victory but could not make the impression he wanted. A date at York Hall on November 16 is one th…