a five-setter against Leonardo Mayer. After defeating Jérémy Chardy in the third round, Haas was narrowly defeated by the former world No. 1 and eventual champion, Roger Federer, in the fourth round. At a crucial stage in the third set, Haas was only five points away from his biggest win on clay, but was unable to convert a break point that would have seen him serve for the match at 5–3. Federer hit a vital winner to level the score at 4–4, en route to a comeback victory 6–7(4), 5–7, 6–4, 6–0, 6–2. At the Gerry Weber Open, Haas won his first title on grass in his 21st ATP World Tour final. In the process, he defeated fourth seed Jo-Wilfried Tsonga in the second round, Mischa Zverev in the quarterfinals, and Philipp Kohlschreiber in the semifinals. He defeated the tournament's second seed Novak Djokovic, in the final. This victory made Haas one of a small group of players to have won ATP titles on all three major surfaces (grass, clay, and hard courts.) With Haas' success at this tournament and at the French Open, his ranking rose to no. 35. At Wimbledon, Haas won a five-set match against Marin Čilić. Haas was up two sets to love and had match points in the fourth set, then had to save two match points serving at 5–6 before the match was suspended due to darkness after over four hours of play, at 6–6 in the fifth. The next day, Haas broke Cilic at 8–8 and eventually held on to win. Haas then comfortably defeated Igor Andreev to reach the quarterfinals. There, he defeated Novak Djokovic for the second time in three weeks to reach the semifinals at Wimbledon for the first time in his career, where he faced Roger Federer in a rematch of their encounter in Paris. Haas lost, ensuring Federer's historic seventh Wimbledon final. This success at Wimbledon made Haas rise considerably in ATP ranking, reaching No. 19. Haas continued his late career resurgence by making it to the semifinals at the LA Tennis Open, defeating Marat Safin in the quarterfinals, before losing to Sam Querrey. He made it to the third round at the US Open, losing narrowly to Fernando Verdasco, after being up a break in each set. 2010–2011: Continued injuries and absence Following his comeback, however, Haas suffered from another bout of injury. He made the third