Etlis competed in the doubles competition of the 2003 Australian Open; he and partner Rodriguez reached the semifinals. After defeating Leander Paes and David Rikl (6–3, 6–3) in the quarterfinals, they lost 3–6, 4–6 played to # 1 seed Mark Knowles and Daniel Nestor. At the 2003 French Open Etlis and Rodriquez reached the quarterfinals, losing to Paul Haarhuis and Yevgeny Kafelnikov. Etlis also competed in mixed doubles with Clarisa Fernández at Roland Garros in 2003. They lost in the quarterfinals to # 4 seed Cara Black and Wayne Black, 6–3, 6–3. Etlis and Rodriguez reached the 3rd round at the 2003 Wimbledon tournament.