[1] Roger Federer would win his first of 20 Grand Slam titles by defeating Aussie Mark Philippoussis 7–6(7–5), 6–2, 7–6(7–3) in the final at Wimbledon.

Roddick started the season off with an epic victory in the quarterfinals of the Australian Open over Younes El Aynaoui, winning 21–19 in the fifth set after playing for 4 hours and 59 minutes.

[4] At the US Open, Roddick saved a match point en route to the title in the semifinals against David Nalbandian, which he won 6–7(4–7), 3–6, 7–6(9–7), 6–1, 6–3.

[5] Roddick became one of only three players to win Canada, Cincinnati and the US Open consecutively along with Patrick Rafter in 1998 and Rafael Nadal in 2013.

Juan Carlos Ferrero also added his name to the list of maiden Grand Slam champions in 2003 when he won the French Open, having lost in the final the previous year.

Ferrero also captured Masters Series titles in Monte Carlo and Madrid and went on to end the season as world No.

Félix Mantilla caused an upset by capturing his first and only Masters title in Rome, picking up wins over Costa, Kafelnikov and Federer on the way.

He then defeated Ferrero in the final in another 5 set victory to help Australia capture their 28th Davis Cup crown.