>> o'donnell: the n.f.l. star who lost his cool says he deserves to play again. and why is the player he attacked now also apologizing? a hockey team's m.v.p. how this pup gets his shot. and as the democratic candidates for president debate tonight, they're taking aim at a new target. >> this is the "cbs evening news" with norah o'donnell reporting tonight from ghashington. >> o'donnell: good evening, and thank you for joining us. president trump's hand-picked ambassador to the european union sent shock waves across the u.s. capitol today, changing his story and directly implicating the president in the pressure urmpaign against ukraine. gordon sondland told congress there was a quid pro quo, an attempt to trade military funding for an investigation of mr. trump's rivals, and it was