Sonny Gray allowed one hit over seven innings and Alec Burleson drove in two runs and the St. Louis Cardinals completed a three-game sweep with a 5-3 win over the San Francisco Giants on Sunday. Brendan Donovan and Matt Carpenter also drove in runs for the Cardinals, who have won five of seven. St. Louis swept the three-game series, which began in Birmingham, Alabama, on Thursday night with the tribute to the Negro Leagues.