Arenas has craved to be acknowledged as the alpha male. Now he is. His contract numbers emphasize it. So it is time for him to respond accordingly in deed and spirit. It is time for him to be the leader type he has resisted being. It is time for him to get in the faces of big-name opponents and see them as threats to his potential legacy. It is his team, his city and his responsibility to meet the challenge that goes with a $111 million contract.Tom Knott's latest column, if you're into that sort of thing (I'm not).