Roger Federer is one of the names which is synonymous to the game of tennis. The Legend from Switzerland has won each and every Grand Slam in the tennis calendar. He has won a total of 16 grand slam titles and has 6 grand slam runner-up runs so far in his career.

Federer is known for his perseverance and structured match play where he tends to think and strategize efficiently before playing each and every point. His inside out and disguised forehands damage the opponent's free flow of performance. Federer possesses a deadly backhand which is filled with ample amount of variations- from the unforgiving backhand slice and the aggressive backhand stroke equipped with great power and heavy spin to take any player off his comfort zone with ease.

Federer also has the tendency to place his serve at different angles with a single kind of ball toss which is a rare quality. His game has improved by the years and has achieved great standards and global recognition.

Federer has learnt and mastered the game of tennis with the help of some important men who came along in his professional life. These men were his coaches during his professional career. The Swiss maestro has changed a few coaches during his tenure as a tennis professional. There were times when Federer played without a coach and claimed a Grand Slam victory too.

Federer started playing tennis professionally at the junior level when he was 8 and later evolved as one of the greatest tennis players in the open era. Federer has broken number of records held previously by tennis legends Bjorn Borg and Pete Sampras. Federer's performances and coaches changed during the years. A brief mention can be drawn in context with the coaches and his achievements from the Swiss legend's timeline.

1989-1998: Roger Federer was under the watchful guidance of Seppli Kacovsky from Switzerland. Kacovsky was the head coach of the Old Boys’ Tennis Club in Federer’s home town of Basel. Little Roger represented the Old Boys' when he was eight years old and played there until 1994. Later from 1995 onwards Federer was selected and coached by the Swiss National Tennis centre in Ecublens. He continued to train there until he completed school.

Peter Carter coached Roger Federer on a weekly basis from the age of 10 to 14.They worked together again at a training facility in Biel in 1997 and continued coaching Federer till he turned pro. During these years Federer won four ITF junior titles including the prestigious Orange Bowl where he defeated Guillermo Coria in the finals. He ended 1998 as junior World Number One.

1999-2004: Federer then chose former ATP player Peter Lundgren to be his coach, whom he met in Beil, as he entered the professional circuit and frequently consulted with Carter also. During these years he reached his first ATP final at the Marseille Open in 2000 where he lost to Marc Rosset. He then went on further to win at Milan in 2001 along with quarterfinal appearances at French Open and Wimbledon. He won his first Masters Series in Hamburg in 2002 where he defeated Marat Safin in the finals. Federer then soared to greatness when he won the Wimbledon Championships in 2003 and then clinched three Grand Slam titles in 2004.

2005-2008: Then Federer approached former player and acclaimed coach Tony Roche for help. Roche is a former Australian tennis champion who previously coached Patrick Rafter, as well as Ivan Lendl, to the world number one ranking. Federer won a total of 9 Grand Slams during these years before he officially parted company with the Australian legend. Despite moving out of the partnership, Federer was believed to have consulted Roche from time to time.

2009-Present: Federer played without a coach for a while and managed to win a few Grand Slam titles. Darren Cahill and Jose Higuera have also had period coaching but it is believed that he has also taken lessons and suggestions from Severin Luthi.

Now in 2010 with Federer's ranking dipping from the number one spot, he has confirmed reports that Paul Annacone will be his coach on trial basis. Paul has been coach to American tennis Legend Pete Sampras and other tennis greats like Marat Safin and Tim Henman and is now the head coach of men’s tennis for Britain’s Lawn Tennis Association.

No matter who the coach is, Federer will always be looking forward to improve performance and bag more Grand Slam Titles in the coming years….