The forth and the final grand slam of the year US open is all set to start on August 29,from Monday. US Open is the fourth Grand Slam tennis tournament of a year. The other three Grands Slams of year are Australian Open, French Open and Wimbledon. The U.S. Open is the second oldest of the four grand slams, only Wimbledon has been running for longer.

Novak Djokovic and Flavia Pennetta are the defending champions in both women’s and men’s single category respectively. Both Novak Djokovic and Serena Williams are the top seated players; Roger Federer will be out of the action due to an injury.

So here are some of unknown and interesting facts about US open:

#US Open began in 1881 with Men’s singles tournament for the purpose of entertainment.

# US Open is the only grand slam in which tie breaker is there in the fifth set.

# In 1975, the U.S. Open became the first Grand Slam tourney to have night games.

# Venus and Serena Williams became the first sisters to meet in a U.S. Nationals/U.S. Open final in 2001.

# For 3 years in 1970s US Open was played on Clay Courts.

# It is the first Grand Slam to present same size and shape of trophies to champions.

# The longest US Open Men’s Singles tennis match was played in 1992 in which Stefan Edberg took 5 hours 26 minutes to beat Michael Chang   # Approximately 70,000 tennis balls are used in one US Open tennis tournament including all practice and main event matches.

# This is the first grand slam tournament to introduce Hawk-eye technology and instant replay.

# Jimmy Connors and Chris Evert are the only two players who won US Open on three different surfaces. They won on Grass, Clay and Hard Courts.

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