Heather Watson wants to feel more relaxed on court

Watson is usually a positive talker so it was telling when she said ahead of her clash with 31st seed Petra Martic on Monday: "I feel like the last year or two I've not been doing as well as I should be or could be doing.

"I've been working really hard so I'm just wanting the hard work to match the results. But the more I get older the more I realise how mental it is and how the most important thing is just being confident in yourself and being able to stay relaxed in those tense, important moments.

"I go back outside the top 100 and then, in my mind, I want to get straight back in immediately, but it doesn't always work out like that so I have to be patient."

Asked why she has not managed to find the answers, Watson said: "Probably because I'm emotional. I need to relax a bit more and not put too much pressure on myself.

"It's a vicious cycle and I just want to get out of that cycle and enjoy it more and not put too much on winning, especially in the bigger tournaments."

Watson, who has won only a single match at the last five grand slams combined and only one match in the last five years at Melbourne Park, is one of seven British players competing on the opening day of the tournament.

While most of the attention will fall on Andy Murray, qualifier Harriet Dart has her own momentous occasion when she takes on Maria Sharapova on Rod Laver Arena.

The 22-year-old landed the plum draw at only her second major tournament, and is relishing the occasion.

She said: "Sharapova has been my idol since I was very little. She always looked so nice when she was playing, and also the way she holds herself on the court, her presence. She has been so successful in the game. I have always looked up to her, and it will be pretty cool to play her."

There will be higher expectations on Dart's fellow qualifier Dan Evans, who faces Japan's Tatsuma Ito, while Kyle Edmund will hope to survive a stinker of a first-round draw against Tomas Berdych.

The Czech has reached at least the quarter-finals in seven of the last eight years but is unseeded after slipping down the rankings because of injury.

Edmund's ranking would drop outside the top 20 should he fall at the first hurdle after last year's remarkable run to the last four, but he has not been losing any sleep over it.

He said: "It's a number on a sheet of paper. The worst that can happen is I lose and I go down a bunch of rankings.

"This year's so long, there's so many more opportunities after this tournament to do well."

Katie Boulter marks her slam debut outside of Wimbledon by taking on experienced Russian Ekaterina Makarova while in-form Cameron Norrie, fresh from reaching his first ATP Tour final in Auckland this weekend, plays doubles partner Taylor Fritz, of the USA.

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