Australian Open 2013: Andy Murray will be helped by progress of Jamie Baker in Melbourne Afterwards, Murray admitted that he had not been sure how to go about things. I've seen him play matches where he's made hundreds of errors as well as matches where he's unbelievable for a few sets. It's quite difficult to get the tactics spot on. Such indecision is unlikely to repeat itself on Tuesday, for the arrival of Lendl has helped Murray to simplify his tactical approach. Where previously he would be drawn into plotting and scheming and over-thinking, now he just tries to put his opponent down as quickly as possible. When you are 6ft 3in, with biceps like drainpipes, it makes little sense to shy away from confrontation. "I learnt a lot from last year's semi-final here [against Novak Djokovic]," said Murray yesterday. Even though I lost it, I went about the match the right way. And the same thing happened in the Wimbledon final. I was taking my chances. I wasn't waiting for the guys to miss. While Murray was bullying his way to the US Open title in September, Baker was making about £500 a pop from a series of Challenger tournaments in Turkey. The past five years have not been kind to a player with an impeccable work ethic and a legitimate aspiration to crack the top 100. At 21, Baker - who plays Lukas Rosol, the man who ousted Rafael Nadal from last year's Wimbledon, on Tuesday - had been a rising force. The last time he played in a grand slam outside of Wimbledon was here at Melbourne Park in 2008, when he beat Austria's Daniel Koellerer (later the world No 55) in the final round of qualifying. But then, on a trip to Florida, he found strange things happening in his body. He was covered in inexplicable bruises and his gums were bleeding excessively. At hospital he was told he had a rare and lethal virus called ITP. The doctor added that he should not move off the bed under any circumstances. If anything happens to your head, even if you tap it against something, and you start bleeding, there's nothing we can do. Your body has no defences and we can't operate," he said. Baker recovered, but his career has taken a long time to climb back to where it was five years ago. So Saturday's 6-4, 1-6, 6-3 victory over American Donald Young was a spine-tingling moment for one of the sport's great strivers. "The winter training I did with Andy was a massive factor," Baker said. I had 3½ weeks there, a huge amount of time to improve. We had some good stuff from Ivan too. He just says, "Go out and win, go out and kill the guy." And not as nicely as that, either.