Radwanska keeps up her 100 pct Wimbledon first-round record

The Pole raced into an early lead, breaking twice in the four first games before being pegged back by Kozlova, who did not seem in the least bit overawed despite making her debut at Wimbledon under the roof on Centre Court.

Radwanska, who reached the final in 2012, has never lost a first-round match on the Wimbledon grass and she kept up that record, sealing victory on her third match point.

With rain halting play on the uncovered outside courts, she will have to wait to find out with whether she plays Italy's Karin Knapp or Croatian Ana Konjuh in round two.

British number one Johanna Konta won her first Wimbledon match at the fifth attempt on Wednesday, seeing off Puerto Rico's Monica Puig 6-1 7-5 after a rain delay.

Konta, who was ranked 126th in the world at last year's tournament, has risen quickly up the tennis ladder to be seeded 16 this year.

Puig settled better after the rain interruption, holding her serve at the resumption in the fourth game of the second set from 40-15 up, and immediately breaking Konta in a match that started on Tuesday.

But Konta regrouped to break back in the eighth game and then again to claim victory in front of an enthusiastic home crowd.

Twice champion Petra Kvitova needed just 15 minutes to bulldoze through the first set against Romania's Sorana Cirstea at Wimbledon on Wednesday, taking the match 6-0 6-4.

The Czech 10th seed hopes to recapture the triumphs of 2011 and 2014 after losing in the third round last year and with the start of her 2016 season blighted by gastrointestinal illness.

She put up a commanding display, only losing three points behind her first serve and shooting seven aces against Cirstea, ranked 85th in the world.

"I'm glad about how I played today, how my serve worked today. I think she wasn't a really easy opponent on the grass to play in the first round," Kvitova told reporters.

"I think for fans it was little bit cold. It wasn't really great for them. I made it quick. So that's good," she said, smiling.

3-Agnieszka Radwanska (Poland) beat Kateryna Kozlova (Ukraine) 6-2 6-1

10-Petra Kvitova (Czech Republic) beat Sorana Cirstea (Romania) 6-0 6-4

16-Johanna Konta (Britain) beat Monica Puig (Puerto Rico) 6-1 7-5

21-Anastasia Pavlyuchenkova (Russia) beat Hsieh Su-Wei (Taiwan) 7-5 1-6 6-1

32-Andrea Petkovic (Germany) beat Nao Hibino (Japan) 3-6 7-5 6-2

Julia Boserup (U.S.) beat Tatjana Maria (Germany) 6-4 0-6 6-2

Evgeniya Rodina (Russia) beat Lesia Tsurenko (Ukraine) 6-3 7-5