Kazuhiro Hatakeyama hit a two-run homer, Shinya Miyamoto had three hits with three RBIs and the Tokyo Yakult Swallows routed the Hiroshima Carp 8-3 on Sunday afternoon.
The Swallows extended their undefeated streak to eight games, including two ties.
Hatakeyama went deep to left off reliever Takahiro Aoki (0-1) with a runner on second, overturning a 3-2 deficit to a 4-3 lead with two outs in the seventh inning. Rookie left-hander Kentaro Kyuko (1-0) got his first career win after retiring four batters in relief at Mazda Stadium.