Japanese first seed Naomi Osaka pulled out of the Melbourne Summer Set 1 ahead of her semifinal on Saturday citing an abdominal injury.The Australian Open warm-up event was the world No. 13's first tournament since she took a break following her third-round exit at the U.S. Open in September.The 24-year-old had beaten Germany's 75th-ranked Andrea Petkovic 6-1, 7-5 in the quarterfinals on Friday to set up a semifinal with 31st-ranked Russian Veronika Kudermetova."Sad to withdraw due to injury from my match today, my body got a shock from playing back to back intense matches after the break I…READ FULL ARTICLE
