Almost 30 years have passed since the A's swept the Giants in the World Series in 1989, a series that was interrupted by the Loma Prieta earthquake and turned the Bay Area's attention away from baseball. There was no parade at the time, and understandably so. But on Saturday, in front of a sold-out crowd at the Coliseum, players from the 1989 team gathered to be honored in an on-field ceremony, receiving a belated parade ceremony for their championship.