Garbine Muguruza admitted she was not yet at peak fitness ahead of the Australian Open after a tough start to the year.
Muguruza retired at the Brisbane International due to cramps and then withdrew in Sydney because of a thigh injury.
The 24-year-old two-time grand slam champion said she was hoping to be at her healthiest when the year's first major begins on Monday.
"I wish to be more," Muguruza said on Saturday when asked if she was at 100 per cent.
"Well, you always want to be perfect before a grand slam, but you're never perfect. But I feel I'm much better every day."
Muguruza has played just one full match – a win over Kiki Bertens in Sydney – ahead of the Australian Open.
The Spanish world number three, who faces France's Jessika Ponchet in the first round in Melbourne, said it was far from ideal preparation, but she is remaining upbeat.
"It's true, I would like to have played more matches. But you never really know how it's going to start the year," Muguruza said.
"I only played two matches, but I felt that my tennis was good. Maybe my fitness was a little bit, you know, there. I don't know.
"I think sometimes you don't need that many matches.
"With my experience, sometimes you play very good, and you don't need 25 tournaments before, sometimes you need it, so... so far, I am OK."
24. September 2018
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23. September 2018
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|Guardiola targets Barca, Bayern dominance with Premier League priority|
|Centurions Rohit and Dhawan put India in final|
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|Barcelona 2 Girona 2: Stuani brace punishes Lenglet red|
|Frosinone 0 Juventus 2: Ronaldo redeemed as champions extend perfect start|
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|Composed Woods hits turn with five-shot lead|
|Chiefs´ Mahomes has another record-breaking Sunday|
|Saints QB Drew Brees passes Brett Favre for most career completions|
|Emery hints Leno may need patience after Cech display|
|Picamoles scores four as Montpellier batter 14-man Toulouse|
|Messi breaks LaLiga record|
|Worcester fend off prowling Tigers, Sarries go top|
|AC Milan 2 Atalanta 2: Last-gasp Rigoni rescues a point|
|Neymar keen to repay supporter affection|
|Pellegrini rues West Ham´s wastefulness|
|Paris Saint-Germain´s positive response buoys Tuchel|
|Lewis rekindles fond memories with Vilamoura triumph|
|Arsenal 2 Everton 0: Lacazette, Aubameyang extend winning streak|
|Stephens suffers as Osaka withdraws in Wuhan|
|Rhinos run riot to secure Super League status|
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|Let´s have some fun - Wentz tweets message to Eagles fans ahead of return|
|Maybe in a year Chelsea will be at Liverpool´s level – Sarri|
|Under-pressure Rodgers bemoans ´bitty´ Celtic start|
|Slater should be banned for Grand Final - Fittler|
|Simon ends Bachinger fairytale to lift Metz title|
|Dominant Thiem reigns in St. Petersburg|
|Neymar hands young fan his shirt during Paris Saint-Germain victory|
|Quick-Step Floors storm to fourth time trial gold|
|Jorginho sets new passing record in West Ham draw|
|Rubiales slams ´crazy´ LaLiga schedule|
|Rennes 1 Paris Saint-Germain 3: Tuchel´s Ligue 1 record stays perfect|
|Why so serious? Joshua reveals Fury has blocked him on Twitter|
|West Ham 0 Chelsea 0: Sarri´s 100 per cent start comes to frustrating end|