The Latest: Celebration starts too soon in a tiebreaker 1st

MELBOURNE, Australia (AP) — The Latest on Monday at the Australian Open: (all times local):
5 p.m.
Katie Boulter started celebrating a bit too soon during her first-round win over Ekaterina Makarova at Melbourne Park. Blame the new tiebreaker being used for the first time this year at the tournament.
Boulter beat Ekaterina Makarova 6-0, 4-6, 7-6 (6), including 10-6 in the tiebreaker.But the British player started celebrating and went to the net when she reached 7-4 in the tiebreaker , forg