Maria Kirilenko took another step in her comeback from injury by beating third-seeded Klara Koukalova of the Czech Republic 6-7 (4), 6-4, 6-0 Thursday to reach the quarterfinals of the Korea Open. Read more http://espn.go.com/tennis/story/_/id/11546577/maria-kirilenko-rallies-make-korea-open-quarterfinals