British number one Johanna Konta beat Ukrainian Lesia Tsurenko to reach the second round of the Aegon Classic in Birmingham.
Fourth seed Konta battled to a 6-3 7-6 (8-6) win against the world number 34.
Konta, 26, was a game away from dropping the second set but broke back at 5-3 before going on to win the tie-break.
The world number seven will face either Christina McHale or fellow American Coco Vandeweghe in the next round.
Konta is pursuing a first WTA title on grass having lost to Croatia's Donna Vekicin the final of the Aegon Open in Nottingham last week.