London— Petra Kvitova wasted no time as she opened the defense of her Wimbledon title in overpowering fashion. Winning 28 of 29 points on serve the two-time champion needed only 35 minutes to overpower Kiki Bertens of the Netherlands 6-1 6-0 in Tuesday’s opening match on Centre Court.

The only point Kvitova lost on serve came when she double-faulted on the first point of the final game hitting a 93 mph (150 kph) second serve just wide. She won the next four points finishing — appropriately — with a service winner.

In keeping with Wimbledon tradition Kvitova had the honour of playing the first Centre Court match on the second day as the reigning champion.

“It was a great feeling” said the second-seeded Czech who also won the title in 2011. “I have so many nice memories. I was very nervous before my match. The atmosphere was unbelievable so for me it was really nice to back. I’m really glad how I played as well.”

It was a performance of total dominance by the powerful lefthander. Kvitova came into Wimbledon without any grass-court matches this year after withdrawing from last week’s tournament in Eastbourne with a viral illness.

She showed no signs of illness Tuesday as she used her big serve and flat forehand to dictate play. The 108th-ranked Bertens who has never beaten a top 10 player was continuously on the defensive and could not cope with the heavy pace.

In addition to her dominance on serve Kvitova won all 10 of the points in which she came to the net. She had only three unforced errors to go with her nine winners.

In another one-sided women’s match 10th-seeded Angelique Kerber swept fellow German Carina Witthoeft 6-0 6-0 — the third so-called “double bagel” in two days. On Monday both Venus Williams and Andrea Petkovic won their matches 6-0 6-0. Those were the first double bagels at Wimbledon in six years.

Kerber said the scoreline of the 44-minute match was misleading.

“I think it was a good match for me” she said. “Carina was playing not bad actually. So the games (were) not like 40-0. It was very close actually.” On another sunny and warm day at Wimbledon with temperatures reaching 30 degrees Celsius (85 degrees Fahrenheit) seven-time champion Roger Federer was up second on Centre Court against Damir Dzumhur of Bosnia.

Meanwhile Serena and Venus Williams have pulled out of women’s doubles at Wimbledon. The tournament referee’s office announced the withdrawal Tuesday but did not give a reason. The Williams sisters have won 13 Grand Slam doubles titles as a pair most recently at Wimbledon in 2012. Both won first-round singles matches Monday.

In doubles at the All England Club last year they stopped after three games in the second round because Serena was ill. Misaki Doi of Japan and Stephanie Vogt of Liechtenstein replaced the Williams sisters in this year’s draw.

Dominika Cibulkova and Anna Karolina Schmiedlova also pulled out of doubles on Tuesday.

Results

> Men’s Singles Round 1

15-Feliciano Lopez (Spain) beat Steve Darcis (Belgium) 6-2 7-6(4) 6-4; 10-Rafa Nadal (Spain) beat Thomaz Bellucci (Brazil) 6-4 6-2 6-4; 13-Jo-Wilfried Tsonga (France) beat Gilles Muller (Luxembourg) 7-6(8) 6-7(3) 6-4 3-6 6-2; Sam Querrey (U.S.) beat Igor Sijsling (Netherlands) 7-5 6-3 6-4; 22-Viktor Troicki (Serbia) beat Aleksandr Nedovyesov (Kazakhstan) 6-1 6-4 3-6 6-3; Albert Ramos (Spain) beat Denis Istomin (Uzbekistan) 6-2 6-2 3-2 (Istomin retired); 2-Roger Federer (Switzerland) beat Damir Dzumhur (Bosnia and Herzegovina) 6-1 6-3 6-3; Samuel Groth (Australia) beat 31-Jack Sock (U.S.) 6-3 3-6 6-3 6-3; 30-Fabio Fognini (Italy) beat Tim Smyczek (U.S.) 6-4 6-3 6-2; Nikoloz Basilashvili (Georgia) beat Facundo Bagnis (Argentina) 6-4 7-6(3) 6-2; James Duckworth (Australia) beat Malek Jaziri (Tunisia) 7-6(2) 6-2 3-6 3-6 7-5; 23-Ivo Karlovic (Croatia) beat Elias Ymer (Sweden) 6-7(2) 6-2 6-4 7-6(2); 25-Andreas Seppi (Italy) beat Brydan Klein (Britain) 6-3 6-2 6-2; Dustin Brown (Germany) beat Lu Yen-Hsun (Taiwan) 3-6 6-3 7-5 6-4; Alexandr Dolgopolov (Ukraine) beat Kyle Edmund (Britain) 7-6(4) 6-1 6-2; 20-Roberto Bautista (Spain) beat Ruben Bemelmans (Belgium) 6-1 6-3 7-6(6); Benoit Paire (France) beat Mikhail Youzhny (Russia) 6-4 6-4 6-3

> Women’s Singles Round 1

Ajla Tomljanovic (Croatia) beat Klara Koukalova (Czech Republic) 6-3 6-4; Heather Watson (Britain) beat 32-Caroline Garcia (France) 1-6 6-3 8-6; Evgeniya Rodina (Russia) beat Laura Robson (Britain) 6-4 6-4; Kurumi Nara (Japan) beat Magda Linette (Poland) 3-6 6-3 4-3 (Linette retired); Mirjana Lucic-Baroni (Croatia) beat Yaroslava Shvedova (Kazakhstan) 7-5 6-7(5) 7-5; Anastasia Pavlyuchenkova (Russia) beat Mona Barthel (Germany) 6-7(3) 7-6(4) 6-2; 2-Petra Kvitova (Czech Republic) beat Kiki Bertens (Netherlands) 6-1 6-0; 17-Elina Svitolina (Ukraine) beat Misaki Doi (Japan) 3-6 6-3 6-2; 20-Garbine Muguruza Blanco (Spain) beat Varvara Lepchenko (U.S.) 6-4 6-1; Casey Dellacqua (Australia) beat Tamira Paszek (Austria) 6-2 6-2; 10-Angelique Kerber (Germany) beat Carina Witthoeft (Germany) 6-0 6-0.