Saul “Canelo” Álvarez unanimously outpointed previously undefeated Callum Smith to win the WBA and Ring super-middleweight championships and vacant WBC super-middleweight title Saturday night at the Alamodome. Álvarez (54-1-2, 36 KOs) dominated his only bout this year, repeatedly hitting Smith (27-1, 19 KOs) with straight rights and right hooks to the head over 12 rounds.Two judges scored the...