Top seed James Blake overcame a patchy service game to defeat South Korean qualifier Woong-Sun Jun 6-3, 7-5 and reach the quarter-finals of the Indianapolis Tennis Championships on Thursday. Blake, ranked eighth in the world, made just 49 percent of his first serves but converted three of nine break points to defeat the 293rd-ranked Jun in 71 minutes.
The 17-year-old rallied to make the grade in the Osaka Mayor's Cup tennis tournament
The fourth seeded Indian beat big-serving Phillip Oswald of Austria in the pre-quarter-finals in Osaka Mayor's Cup.
The Indian duo lost to seventh seeds Alex Kuznetsov of the US and Mihail Zverev of Germany in the boys' doubles semi-finals at the French Open.