It was clear that something was amiss with the 28-year-old England No1 in the third game after taking the first two for the loss of just five points. Bailey, suffering with sinusitis, was struggling to respond to the Hawkes advance as the world No24 from New Zealand gained the upper hand in games three and four.
But the plucky Lincolnshire lass from Stamford fought back in the fourth to save game-balls at 6-8, 8-9 and 9-9 before finally winning her second match-ball - converting it with the luckiest shot of the match!
"I felt fine in the first two games, but as soon as I soon as I started to run around in the third, the infection kicked in and I just couldn't breathe. My legs and arms felt dead - you can't think straight when all you're trying to do is breathe!" said world No4 Bailey.
"I've had sinus problems all my life - I've had it all, including three operations and laser treatment, but I still can't shake it off. I feel fine in everyday life, but you never know how you're going to feel on court. I feel as if I'm as good as anyone, but this lets me down. I'll have to take it easy tonight and hope that I'll be fine tomorrow."
Bailey was joined in the last sixteen by all four England team-mates - Vicky Botwright, the sixth seed from Manchester; Jenny Duncalf, the ninth seed from Yorkshire; Laura Lengthorn-Massaro, the 11th seed from Lancashire and 12th seed Alison Waters, from London.
Indeed Bailey faces Lengthorn-Massaro for a place in the quarter-finals after the 23-year-old from Preston beat Italian qualifier Manuela Manetta 9-4, 9-3, 9-7.
Botwright and Duncalf will line up in another all-English second round encounter after Botwright despatched Malaysia's Sharon Wee 9-2, 9-5, 9-2 in 26 minutes and Duncalf, from Harrogate, recovered from a game down to beat seven times US champion Latasha Khan 6-9, 9-3, 9-1, 9-0 in 56 minutes.
"I knew it would be tough - Latasha's a good player and if you give her time on the ball, she'll cut it away," said the 24-year-old British National champion. "I felt comfortable towards the end, but I had to be patient. We'd all rather play on the all-glass court - so I'm sure there'll be some gruelling matches here tomorrow.
"The last time I played Vicky she beat me in the British Open - but I won the time before, so I'm sure it'll be a good match."
1st round results:
 Nicol David (MAS) bt Isabelle Stoehr (FRA) 9-7, 9-3, 9-0 (39m)
 Shelley Kitchen (NZL) bt [Q] Lauren Briggs (ENG) 9-2, 9-4, 9-2 (35m)
 Natalie Grainger (USA) bt Samantha Teran (MEX) 9-6, 9-0, 9-3 (36m)
 Engy Kheirallah (EGY) bt [Q] Runa Reta (CAN) 9-3, 9-4, 9-3 (34m)
 Rachael Grinham (AUS) bt [Q] Louise Crome (NZL) 9-3, 10-8, 9-5 (34m)
 Alison Waters (ENG) bt [Q] Suzie Pierrepont (ENG) 9-0, 9-3, 9-3 (28m)
 Vicky Botwright (ENG) bt Sharon Wee (MAS) 9-2, 9-5, 9-2 (26m)
 Jenny Duncalf (ENG) bt Latasha Khan (USA) 6-9, 9-3, 9-1, 9-0 (56m)
 Kasey Brown (AUS) bt [Q] Aisling Blake (IRL) 9-2, 9-6, 9-2 (55m)
 Vanessa Atkinson (NED) bt Alicia Alvarez Riaza (ESP) 9-0, 9-0, 9-1 (17m)
 Laura Lengthorn-Massaro (ENG) bt [Q] Manuela Manetta (ITA) 9-4, 9-3, 9-7 (45m)
 Tania Bailey (ENG) bt Jaclyn Hawkes (NZL) 9-4, 9-1, 6-9, 10-9 (69m)
 Annelize Naude (NED) bt Raneem El Weleily (EGY) 9-3, 9-4, 7-9, 5-9, 9-3 (64m)
 Omneya Abdel Kawy (EGY) bt [Q] Orla Noom (NED) 9-4, 9-2, 9-3 (27m)
 Rebecca Chiu (HKG) bt [Q] Line Hansen (DEN) 9-5, 9-6, 9-2 (47m)
 Natalie Grinham (AUS) bt Dominique Lloyd-Walter (ENG) 9-3, 9-6, 9-5 (43m)
2nd round line-up:
 Nicol David (MAS) v  Shelley Kitchen (NZL)
 Natalie Grainger (USA) v  Engy Kheirallah (EGY)
 Rachael Grinham (AUS) v  Alison Waters (ENG)
 Vicky Botwright (ENG) v  Jenny Duncalf (ENG)
 Vanessa Atkinson (NED) v  Kasey Brown (AUS)
 Tania Bailey (ENG) v  Laura Lengthorn-Massaro (ENG)
 Omneya Abdel Kawy (EGY) v  Annelize Naude (NED)
 Natalie Grinham (AUS) v  Rebecca Chiu (HKG)
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