Tara Moore led the way with the biggest win of her career on a good day for the British women at the AEGON Classic in Birmingham.
Anne Keothavong, Laura Robson, Melanie South and Heather Watson also claimed impressive victories at the Edgbaston Priory Club.
Former wild child Moore, who lost her LTA funding due to a poor attitude at one stage, insists she has "grown up" and helped prove that with a 6-1 6-2 demolition of 11th seed Iveta Benesova on Tuesday.
Her Czech opponent was not happy with the ragged-looking court but Moore said such complaints could not take the gloss off her win.
"There's no taking away who I played," said Moore.
"She's an excellent player, she wouldn't have got to where she is (world number 53) if she wasn't.
"I just tried my best on every point."
The 19-year-old said she was not affected by her opponent's clear frustration about the conditions.
"Whatever she's doing is up to her," said Moore, who will now face Australia's Casey Dellacqua in round two.
"I try not to think about that. I tried to think about my own game."
Meanwhile, new British number one Keothavong claimed a fine 6-2 7-5 win over last year's Wimbledon quarter-finalist Tamira Paszek.
She said: "I have been serving really well recently. I struggled a bit in the second set but I didn't let it get to me and managed to finish it in two sets.
"She was a tough opponent. She's not alien to grass or anything."
Next up for for Keothavong will be a former Wimbledon semi-finalist, China's Zheng Jie.
Looking ahead to that test, the Briton added: "She's another tough opponent. She's good on the grass. I've neever actually played her before in singles but she's solid off the ground and hits a flat ball which is effective on grass."
Robson's 6-4 6-1 win over qualifier Grace Min was also impressive, although widely expected, but South's victory over Mirjana Lucic was more of a surprise.
Lucic is no longer the player who reached the semi-finals of Wimbledon back in 1999 but she is still ranked 139 places higher than South, a fact which made her 6-1 4-6 6-3 win an excellent result.
South's win sets up a clash with former world number one Jelena Jankovic on Wednesday, while Robson will play New Zealander Marina Erakovic.
Late in the day, Watson claimed victory as she defeated Argentina's Paula Ormaechea 6-4 3-6 6-3 to make it five British women in the second round for the first time ever.
The quintet could yet be joined by Elena Baltacha as her first-round match against Kai-Chen Chang was suspended after she lost the opening set 6-4 but went a break up in the second at 3-2.
If she wins, Baltacha will face Watson in round two.
On what was a busy first-round day following Monday's complete wash-out, Sorana Cirstea was another seed to fall, going down 3-6 6-3 6-2 to American Melanie Oudin on Centre Court in the first match of the day.
