Tomoyuki Sugano allowed a run over seven innings to reach 10 wins for the first time in two years as the Yomiuri Giants held on to beat the Yakult Swallows 4-1 in the Central League on Sunday. The 34-year-old Sugano (10-2) allowed five hits and a walk at Tokyo Dome to win a pitchers’ duel against the elder statesman of Japanese pitchers, 44-year-old lefty Masanori Ishikawa. “I’m putting my baseball career on the line this year,” said Sugano, who in July threw his first shutout in three seasons. Ishikawa (1-3) surrendered two runs in the first inning on a Takumi Oshiro double after issuing a pa…