Ferrero started the year with early losses in the second round of the Heineken Open to Philipp Kohlschreiber 4–6, 6–4, 6–7, and the first rounds of the Brisbane International Florent Serra 3–6, 6–7, and the Australian Open to Fabrice Santoro 3–6, 2–6, 7–6, 2–6 which made him drop out of the top 100 at No.
101 for the first time in almost 10 years.
He, however, reached the quarterfinals of the Brasil Open, losing to Thomaz Bellucci, 6–7, 6–1, 3–6, and of the Copa Telmex, retiring againstDavid Nalbandian, 3–6, 0–3 with a right leg injury.
In March, Ferrero captured his first singles title since 2003 by defeating fifth–seeded Florent Serra, 6–4, 7–5, in the final of the Grand Prix Hassan II in Casablanca, Morocco.
He, however, followed up with early losses in rest of the clay–court season.
He lost in first round of the Barcelona Open to Igor Kunitsyn 5–7, 6–7, failed to qualify for the Internazionali BNL d'Italia, and suffered second–round losses in the Estoril Open to Nikolay Davydenko 5–7, 2–6, Madrid Open to Fernando Verdasco 3–6, 2–6, and the 2009 French Open to Philipp Kohlschreiber 4–6, 6–2, 4–6, 7–6, 3–6.

Surprisingly, Ferrero's resurgence came on the grass courts, as he reached the semifinals of the Queen's Club Championships, losing to Andy Murray, 2–6, 4–6, and the quarterfinals at Wimbledon, defeating tenth seed Fernando González in the third round, 4–6, 7–5, 6–4, 4–6, 6–4, in a match lasting about 3 hours, and seventh seed Gilles Simon in the fourth round, 7–6, 6–3, 6–2, before losing to Andy Murray, 5–7, 3–6, 2–6.
These performances saw him climb from No.
90 to No.
37 in a month.
He then reached the finals of the Umag Open, losing to Nikolay Davydenko, 3–6, 0–6.
At the Legg Mason Tennis Classic, Ferrero advanced to the third round, before losing to Tommy Haas, 5–7, 6–2, 1–6, after beating Tommy Robredo, 6–3, 6–2.

In August he competed at the Rogers Cup, where he needed to qualify for the main draw despite his high ranking.
He defeated Lleyton Hewitt in the first round, 6––1, 6–4, ending Hewitt's three–match winning streak against him.
He then defeated 13th seed Gaël Monfils, 6–3, 7–6.
in the pair's first meeting, before losing to Andy Murray once again, 1–6, 3–6.
He lost in the first round of the Cincinnati Masters to Marin Čilić, 3–6, 4–6.
At the US Open, he defeated Fabrice Santoro in the first round in Santoro's last US Open match.
In the second round against Philipp Petzschner, Ferrero mounted a remarkable comeback from two sets down for the third time in his career to win 1–6, 3–6, 6–4, 6–2, 6–4.
He went on to defeat No.
9 seed, when Gilles Simon retired with a right knee injury while Ferrer was leading 1–6, 6–4, 7–6, 1–0 ret, but lost in the fourth round to eventual champion Juan Martín del Potro 3–6, 3–6, 3–6.
Ferrero climbed impressively into the top 20, having been ranked No.
115 just 5 months before.
In his first tournament after the US Open at the China Open, he lost to Fernando Verdasco, 5–7, 4–6, in the second round, after defeating Nicolás Almagro, 7–5, 7–6.
He competed in the Shanghai Masters, where he missed being seeded by one ranking position.
He was crushed in the first round by 13th seed Radek Štěpánek, 6–3, 6–0, winning only 7 points in the second set.
He also lost in the first round of the Stockholm Open to Marcos Baghdatis, 4–6, 2–6.
He then competed in the Valencia Open but made an early exit to Pablo Cuevas in the first round in a three–set battle, 6–2, 6–7, 3–6, after serving for the set at 5–3 in the second set.
He ended the year at No.
23, which was 32 spots higher than the previous year and won his first title in 6 years.
Ferrero started the year with early losses in the second round of the Heineken Open to Philipp Kohlschreiber 4–6, 6–4, 6–7, and the first rounds of the Brisbane International Florent Serra 3–6, 6–7, and the Australian Open to Fabrice Santoro 3–6, 2–6, 7–6, 2–6 which made him drop out of the top 100 at No. 101 for the first time in almost 10 years. He, however, reached the quarterfinals of the Brasil Open, losing to Thomaz Bellucci, 6–7, 6–1, 3–6, and of the Copa Telmex, retiring againstDavid Nalbandian, 3–6, 0–3 with a right leg injury. In March, Ferrero captured his first singles title since 2003 by defeating fifth–seeded Florent Serra, 6–4, 7–5, in the final of the Grand Prix Hassan II in Casablanca, Morocco. He, however, followed up with early losses in rest of the clay–court season. He lost in first round of the Barcelona Open to Igor Kunitsyn 5–7, 6–7, failed to qualify for the Internazionali BNL d'Italia, and suffered second–round losses in the Estoril Open to Nikolay Davydenko 5–7, 2–6, Madrid Open to Fernando Verdasco 3–6, 2–6, and the 2009 French Open to Philipp Kohlschreiber 4–6, 6–2, 4–6, 7–6, 3–6.
Surprisingly, Ferrero's resurgence came on the grass courts, as he reached the semifinals of the Queen's Club Championships, losing to Andy Murray, 2–6, 4–6, and the quarterfinals at Wimbledon, defeating tenth seed Fernando González in the third round, 4–6, 7–5, 6–4, 4–6, 6–4, in a match lasting about 3 hours, and seventh seed Gilles Simon in the fourth round, 7–6, 6–3, 6–2, before losing to Andy Murray, 5–7, 3–6, 2–6. These performances saw him climb from No. 90 to No. 37 in a month. He then reached the finals of the Umag Open, losing to Nikolay Davydenko, 3–6, 0–6. At the Legg Mason Tennis Classic, Ferrero advanced to the third round, before losing to Tommy Haas, 5–7, 6–2, 1–6, after beating Tommy Robredo, 6–3, 6–2.
In August he competed at the Rogers Cup, where he needed to qualify for the main draw despite his high ranking. He defeated Lleyton Hewitt in the first round, 6––1, 6–4, ending Hewitt's three–match winning streak against him. He then defeated 13th seed Gaël Monfils, 6–3, 7–6. in the pair's first meeting, before losing to Andy Murray once again, 1–6, 3–6. He lost in the first round of the Cincinnati Masters to Marin Čilić, 3–6, 4–6. At the US Open, he defeated Fabrice Santoro in the first round in Santoro's last US Open match. In the second round against Philipp Petzschner, Ferrero mounted a remarkable comeback from two sets down for the third time in his career to win 1–6, 3–6, 6–4, 6–2, 6–4. He went on to defeat No. 9 seed, when Gilles Simon retired with a right knee injury while Ferrer was leading 1–6, 6–4, 7–6, 1–0 ret, but lost in the fourth round to eventual champion Juan Martín del Potro 3–6, 3–6, 3–6. Ferrero climbed impressively into the top 20, having been ranked No. 115 just 5 months before. In his first tournament after the US Open at the China Open, he lost to Fernando Verdasco, 5–7, 4–6, in the second round, after defeating Nicolás Almagro, 7–5, 7–6. He competed in the Shanghai Masters, where he missed being seeded by one ranking position. He was crushed in the first round by 13th seed Radek Štěpánek, 6–3, 6–0, winning only 7 points in the second set. He also lost in the first round of the Stockholm Open to Marcos Baghdatis, 4–6, 2–6. He then competed in the Valencia Open but made an early exit to Pablo Cuevas in the first round in a three–set battle, 6–2, 6–7, 3–6, after serving for the set at 5–3 in the second set. He ended the year at No. 23, which was 32 spots higher than the previous year and won his first title in 6 years.
Juan Carlos Ferrero