Andy Murray is in action in the ATP Sony Open in Miami this evening as he takes on Andreas Seppi in the fourth round.

Of course, Murray is going to be heavily backed for the win and if he is anywhere near his best, this should be a comfortable straight sets victory for the US Open Champion.

He has looked in good form in the tournament so far and is yet to drop a set, so comes into this clash full of momentum and confidence.

It is at this stage that the compeition really starts to hot up and if Murray does win here, he will face one of Jo Wilfried Tsonga or Marin Cilic, which would be a tough test.

The Scotsman will only be focusing on this encounter though and knows that Seppi is capable of causing an upset here as he is ranked number 19 in the world and is sure to be relishing the chance to go up against one of biggest stars in tennis.

These two have met five times in the past and as you would expect, Murray has had the better of the meetings, coming out on top four times in five encounters.

They haven’t played each other since 2010 though and both men know that their opponent’s game would have changed a lot in the last three years.

It should be a decent match, but when looking at a betting bonus for this one, you can see that Murray is the huge favourite to come out on top at 1/12 with Betfred.

If you think there is an upset on the cards here, you can back Seppi at 11/1.

For any sort of value though, it might be worth heading into first set score market and backing a comfortable 6-2 win for the British number-one as it has odds of 17/5 with William Hill.

Andy Murray is in Australian Open action in the early hours on Wednesday morning as he takes on Frenchman Jeremy Chardy in the quarter-final stage of the tournament in Melbourne.

Murray has not dropped a set in the first four rounds and will be expected to claim another comfortable victory here as he takes on the man ranked number 30 on the men’s circuit.

Chardy has also never made this stage of a Grand Slam, so might not know what to expect in such a big match. He did, however, beat world number six Juan Martin Del Potro earlier in the tournament, so does know what it takes to beat one of the best around.

Murray is a class above Del Potro though and it will take a superb performance from the man from France and a poor one from the US Open Champion for there to be an upset here.

The Scotsman seems to be determined to win here in Melbourne and if he can continue the form he has shows in the previous rounds, then he will make the semi-final, where Roger Federer is likely to be waiting for him.

He cannot afford to take his opponent lightly of course, but should be able to win this one without having to be in top gear, that is just how good he is at the moment.

If we look at some betting offers for this encounter, you can see that Murray is the massive 1/14 favourite to win this quarter-final.

Then, you can back Chardy at 12/1 with Bet365.

For the best value you though, it might be worth heading into the correct score market and backing the British number one to win 3-1, which is at 4/1 with Ladbrokes.

Whatever happens, we should be in for some cracking tennis here.