The sixth game of the Japan Series between the DeNA BayStars and the SoftBank Hawks, scheduled for Saturday at Yokohama Stadium, has been postponed due to rain. Game 6 of the best-of-seven series to decide the champion of Nippon Professional Baseball has been rescheduled for Sunday, while Game 7 will be played at the same venue Monday, if necessary. The BayStars, who advanced as the third-place team in the Central League, lead the Pacific League champion Hawks by three games to two. One more win will give the Yokohama-based club its first Japan Series title in 26 years and third overall. The H…