Teen titan Kostyuk showing she can handle the pressure

Ukrainian, 15, makes Grand Slam history by reaching third round

MELBOURNE - Ukrainian 15-year-old Marta Kostyuk became the youngest player to reach the third round of a Grand Slam in over 20 years when she defeated local wildcard Olivia Rogowska at the Australian Open on Wednesday.

Croatia's Mirjana Lucic-Baroni, who made the third round of the 1997 US Open also at 15, was the previous youngest player to advance to that stage of a major.