Roddick solves a 5 year long mistery.

In a dramatic match last night Andy Roddick finds his way through the semi-final of the Sony Ericsson Open in Miami. His win against the Swiss superstar and world number 1 Roger Federer was the result of an epic match in the Thursday night session of Key Biscayne (7-6[4] 4-6 6-3 in 1h55).

It was Federer's 700th match as a professional player and his loss against Roddick was the first since the 2003 AMS Cincinnati Championship Match. During that stretch, Federer won 11 times against the American Number 1 and even faced match point a couple of times before eventually coming through.

Last night, as often, it was a battle of serve in the first set as none of them faced a single break point, with 73% of point won on his serve (1st and 2nd combined) for Andy Roddick. So the decision of this first set had to come to a tie break, where the American took an early advantage before winning it by 7 points to 4 with an ace.

In the second set, Federer had to do something to get to a deciding set, he served perfectly by wining 80% of his service points and had great return games as he managed to win almost 40% of the points when Roddick was serving, and eventually at the most crucial time at 4-4 he converted his 3rd break point opportunity, and clinches the 2nd set.

In the beginning of the last and 3rd set, both players were handling their services games with no problem. But at 3 games a piece, Federer had his chances leading 0-30 on Roddick serve but didn't find a way to have a break point opportunity. Roddick said after the match that this game was the key game in the match and he tried to stay in the game, especially mentally...

In the very next game, Federer faced his first and lone break point of the match, which Roddick converted with ease as Federer made an unforced error with his forehand into the net. Roddick leading 5-3 in the final set didn't let this match slipped off of his racket, and closed out the match on his 3rd match point with a wining serve down the middle.

Roddick's win was his second against a player ranked World N°1, and today Andy Roddick is the only player to have beaten the Top 3 player of the world this year with his win against world N°3 and N°2 back-to-back in Dubai last month.

Former 2004 Miami Champion and World Number 1, Andy Roddick will now face Russian world N° 4 Nikolai Davydenko in the semi-final. The 26 year-old Russian is the first ever Russian to advance to the semi-final of this Masters Series in Miami. However he trails Roddick 0-5 in their encounter. The last time they met was in Shanghai in the round robin stage of the tennis Masters Cup in Shanghai last year. Davydenko managed to take a set from the Rod for the first time of his career but still lost by 6-3 4-6 6-2. They both are in the top 10 for quite a while now but it will be only their second meeting since the 2005 Australian Open Quarter-Final.

N°4 Seed, Davydenko advanced to his third semi-final of the year after losing at this stage in Doha, and Dubai, by wining with ease his Quarter-final encounter against unseeded and very talented Serb Janko Tipsarevic 6-2 6-1 in just over 1h10. He converted 5 break points out of 6, and won more then 60% of the points overall. Their last meeting was in the SF in Moscow last year, where the Russian clinched his only title of 2007.