Wimbledon 2014: Nick Bollettieri on Rafael Nadal and Maria Sharapova

BBC Radio 5 live pundit Nick Bollettieri looks ahead to two intriguing first round ties to be played on Tuesday.

Number two seed Rafael Nadal comes up against Martin Klizan of Slovakia and Bollettieri believes that the injury-plagued Spaniard may find it difficult to adjust to the Wimbledon lawns early on - but will still not give anything away lightly.

In the women's side of the draw British wildcard Samantha Murray is advised to "go for it" early on in her match against "fierce competitor" Maria Sharapova.

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