Lefty Takahisa Hayakawa allowed three runs over six innings Saturday as the Rakuten Eagles handed the Nippon Ham Fighters a 7-5 loss that put a dent in their fading Pacific League pennant hopes. Hayakawa (11-4) gave up seven hits and a walk while striking out two at Sendai’s Rakuten Mobile Park Miyagi. He left with a 7-3 lead that the second-place Fighters, who entered the day trailing the SoftBank Hawks by 8-1/2 games, nearly erased in the ninth. Nippon Ham’s Shun Mizutani hit the game’s first pitch for a home run, but Hayakawa was able to put up zeroes for the next four innings with the help…