Roger Federer and Tommy Haas contested four ATP Head2Head clashes at the NOVENTI OPEN in Halle.

Roger Federer recorded his eighth straight ATP Head2Head victory against Tommy Haas at Roland Garros in 2009.

Bob Bryan, Tommy Haas, Mark Knowles, Arantxa Sanchez Vicario, Andy Roddick, Coco Gauff and James Blake come together to raise funds for Hurricane Dorian relief efforts at the Baha Mar Cup.

Novak Djokovic, John McEnroe, Pete Sampras and Tommy Haas competed in a doubles exhibition after Saturday's singles semi-final.

Two-time Gerry Open champion Tommy Haas is presented with a frame by ATP Supervisor Miro Bratoev in Halle in honour of his outstanding career.

Tommy Haas was joined by Roger Federer in officially announcing his retirement from professional tennis on Thursday in Indian Wells.

Roger Federer congratulates Tommy Haas on his career as the former World No. 2 announces his retirement Thursday night in Indian Wells.

Tournament Director Tommy Haas does a Q&A during the draw ceremony at the BNP Paribas Open.

A number of ATP World Tour players, including Andy Murray, centre, to the left of Jack Nicklaus, participated in the "Fore Love" tournament.

Tommy Haas and wife Sara Foster pose in traditional Tyrolean outfits ahead of the Generali Open.

Hamburg native Tommy Haas will make his 12th appearance at the German Tennis Championships this week.

Tommy Haas says farewell to Gerry Weber Open fans with daughter Valentina in his arms.

Tommy Haas' daughter, Valentina, joins him for the press conference after his loss on Friday.

Tommy Haas joins Djokovic and Hewitt as the only players to beat Federer twice on grass.

Tommy Haas beats Roger Federer on grass for the second consecutive time on Wednesday at the MercedesCup in Stuttgart.

Long-time friends Roger Federer and Tommy Haas embrace at the net after Haas' upset win on Wednesday in Stuttgart.

Tommy Haas beats Roger Federer for the fourth time in their FedEx ATP Head2Head series on Wednesday in Stuttgart.

Tommy Haas wins 77 per cent of his first-serve points to advance on Tuesday at the MercedesCup in Stuttgart.

Roger Federer and Tommy Haas have some fun at the Schlossplatz ahead of the MercedesCup in Stuttgart.

Tommy Haas, leaping, and Florian Mayer beat third seeds Florin Mergea and Aisam-Ul-Haq Qureshi on Monday at the MercedesCup in Stuttgart.

Tommy Haas, who reached the Munich final in 2000 and won the title in 2013, wins his opener on Monday.

Tommy Haas evens his FedEx ATP Head2Head series against Benoit Paire.

Former Houston champion Tommy Haas scores his first win of the season.

Former champion (2004) Tommy Haas prepares for his ninth U.S. Men's Clay Court Championship.

Tommy Haas has fun with the iguana on Wednesday at the Miami Open presented by Itau.