Japan's Sayaka Ishii withdrew from the quarterfinals of the Pan Pacific Open tennis tournament Friday due to an abdominal injury.The 19-year-old qualifier, who was the only Japanese player remaining in the singles draw, secured her first two wins on the WTA tour this week and was scheduled to face world No. 16 and sixth-seeded Russian Diana Shnaider at Tokyo's Ariake Colosseum.The youngster is the daughter of former Yokohama BayStars shortstop Takuro Ishii, who had 2,432 hits in his Nippon Professional Baseball career to rank 11th on the all-time list. He is now hitting coach of the DeNA Ba…READ FULL ARTICLE