ATP

I am assuming you mean 'when did it change from single-handed to 2-handed'?

I think it mainly changed in the earlier days of Jimmy Connors and his girlfriend of the time, Chris Evert, who were both virtually top-ranked in the world. Both of them were using two-handed backhands.

Then, not long later, Bjorn Borg and Ivan Lendl had long-term great success using top-spun backhands - which had been somewhat of a rarity up until that point. With the advent of more European clay courts, the top-spin backhand established its place.

So, in effect, as grass became a less favourable surface in the world, top-spun backhands have become more 'the rage', and much more use of the two-hander as well - even for many forehands.

ESPN 3 Tennis on your computer, espn3.com/tennis.

Rafael Nadal

the average professional women tennis player plays about 23 games in a year.

About 36 ATP molecules are produced from a single molecule of glucose. There are 2 pathways by which ATP is produced one is aerobic (in presence of oxygen) and other is anerobic (without oxygen). ATP is the energy rich molecule produced at diffferent levels when a glucose molecule undergoes breakdown into intermediate compounds through a long pathway called glycolysis which takesplace in mitochondria. A complex series of events follow in glycolysis, which involve transfer of important groups like phosphate, hydroxyl etc from or to the glucose molecule. thus ATP is produced as a result of these complex events and utilised in daily energy requirements.

There is only one type of ATP and it is a molecule all of its own.

Tennis champion Marat Safin is 37 years old (birthdate: January 27, 1980).

He won 26 million Australian Dollars at the Australian Open.

In professional tennis, this is not really considered, as all the balls used in a match during a tournament are handled by the ball crew. One of them gives the player a ball to play with, and sometimes if the player wants two balls. If you are playing without ball persons, then you should always have 2 balls with you before you serve.

Your team is put down for not here

It is the Association of Tennis Professionals, responsible for the mens tour and world rankings of male tennis players.

You have to work hard so that the top coaches notice you and you can now start training to hit huge serves with the same methods used by senior players such as Roger Federer and Novak Djokovic, and remember training and then training

You can see this:

cutt.ly/ph1q8uC

Most definitely YES. If the server's partner doesn't start his/her move before the receiver strikes the ball, he/she will have difficulty getting into position to poach.

Poaching is the act of crossing in front of your partner striking the ball closer to the net so as to steal time from the opponent.

So many, Pete Sampras, Andre Agassi

Probably most male tennis players wear either a jockstrap or some kind of supportive sports undergarment, e.g. compression shorts, jock boxers, athletic briefs, etc.

ATP stands for Association Tennis Pro, which is made for men's professional world class tennis players. Hope this helps!

Federer - The Fed Express

Sampras- Pistol Pete

Andy Roddick- A. Rod

Djokovic- The Djoker

The only one I know is Janko Tipsaervic.

Marat Safin of Russia at the 2004 Australian Open. He lost in straight sets to Roger Federer of Switzerland in the finals.

Those 30 sets tied the record for most sets played at a Grand Slam. At the 1976 French Open, Harold Solomon of the United States also played 30 sets and wound up losing in the finals to Adriano Panatta of Italy.

In a round robin every player in that particular draw plays everyone else in the draw.

Electron transport chain reactions

2 Chainz