Yoshiyuki Kamei homered twice, Shuichi Murata hit a grand slam and the Yomiuri Giants used a prolific long-ball attack to wallop the Yokohama BayStars in a 12-7 rout on Friday night.
Kamei's first blast in the third, a solo dinger, broke a 1-1 tie and Yoshinobu Takahashi added a two-run blast the same inning as the Giants gave right-hander Tim Corcoran his Japanese baseball baptism.
Left-hander Tetsuya Utsumi (6-3) gave up five runs — three earned — in 6 2/3 innings, getting more run support than he could have imagined in the Giants' 19-hit onslaught at Tokyo Dome.