MELBOURNE, Australia (AP) -- Roman Safiullin of Russia won the boys singles title and Slovakia's Tereza Mihalikova won the girls singles title at the Australian Open on Saturday.
Mihalikova won five consecutive games after Katie Swan took a medical timeout to beat the British player 6-1, 6-4.
Top-seeded Safiullin broke Hong Seong-chan's serve in the penultimate game of the opening set, then held his serve to clinch the set on his way to a 7-5, 7-6 (2) win over the South Korean.
Safiullin also broke Hong's serve to open the second set, then dominated the tiebreaker and clinched the match when Hong hit a backland long.
Swan left the court leading 3-0 in the second set and later received treatment for a right thigh injury. The 15-year-old Swan struggled after that and needed to save two match points in the ninth game. Mihalikova, a 16-year-old member of Slovakia's junior Fed Cup team, served out the match.
''When she went to the medical, I sat in the chair and said `OK, Tereza, come on, win this in two sets,' Mihalikova said. ''I started to believe in myself, and I'm happy I did it.''
Swan, who is based in Wichita, Kansas due to her family's work commitments, had been badly hampered by muscle cramps in the third set of her 2 hour, 36-minute semifinal match on Friday.
''I didn't have much time to recover from yesterday, so I think that had something to do with my injury,'' Swan said. ''Unfortunately, not much I can do about it.''