The Nippon Ham Fighters came from behind in a bizarre seventh inning to beat the Pacific League’s cellar dwellers, the Seibu Lions, 5-1 on Saturday. Trailing 1-0 at Es Con Field Hokkaido outside Sapporo, Nippon Ham loaded the bases against Lions right-hander Tatsuya Imai (4-8) on a walk, a one-out single and an error. Ariel Martinez forced in the tying run with a walk. Imai hit the next batter to push across the go-ahead run before a two-out walk, his third of the inning, made it 3-1 Fighters. Drew VerHagen started and allowed one run over five innings for Nippon Ham but did not figure in the …