Complex sentence: Sachie was the runner-up in the girls' singles event of the 2010 Wimbledon Championships, and reached a high-ranking of no.5 on the ITF junior circuit She is also currently a student at the University of Tsukuba.
Split into simpler sentences: Sachie was the runner-up in the girls' singles event of the 2010 Wimbledon Championships. Sachie is also currently a student at the University of Tsukuba.