The Los Angeles Dodgers have undergone massive changes in the past six months, but Sunday they preserved some crucial continuity when beloved play-by-play announcer Vin Scully announced he would return for his 64th season in 2013. Scully, 84, said he was energized by the moves made by a new ownership group, which completed the largest trade in team history -- a nine-player blockbuster headlined by Adrian Gonzalez -- just the day before.