Marcel Siem has taken control of the Trophée Hassan II in Morocco, as he marches towards a much needed victory and his coveted place in the Masters. Marcel Siem / Getty Images Marcel had a third round of -3 under par 69, to lead the Trophée Hassan II by four shots with a total of -15 under par, and is now in position to win the tournament on Sunday. He needs a victory at Golf du Palais Royal to give himself a chance of climbing into the Official World Golf Ranking’s top 50, just in the nick of time for an Augusta National invite. Marcel was not too happy with the end of his round, he said he was happy until the 15th; " Until the 15th I was really happy with the round, I got over a tough start with tough conditions and all the guys just behind me seemed to start really well and almost caught me up. I had to hole a few big putts just to stay ahead and then I managed to pull away a little bit. But then 15 and 17 were disappointing because you are really looking to pick up a couple of shots there but I managed to give one away. There was pressure there so it was great to make a few putts and pick up four in six holes. It is very nice to have the gap back for the start of the final round tomorrow. I am pretty confident at the moment so I know the swing is there when I trust it and just let it go. That will be very important tomorrow." Four shots back and tied in second place at -11 under par are Pablo Larrazabal, from Spain, England's David Horsey and Mikko Ilonen from Finland. Mikko was also unhappy with his poor finish to his third round; "I think the momentum changed a lot on 11 when I had the penalty shot for the ball moving at address, I still made four, but after that I hit good and bad shots and I think that affected me. The one thing I did well throughout the day was putt well so I was really pleased with that. I am four back and would rather be a little bit closer but we have three guys four behind that can catch him but one of us will have to go really low tomorrow and I think the golf course will allow that. I have made enough birdies and eagles to know I can do it, but I just have to avoid the mistakes." There is no one else that can catch these four, and it looks like this tournament is Marcel's to lose.