|Date of birth||1 August 1983|
|Place of birth||Erlenbach am Main, West Germany|
|Height||1.88 m (6 ft 2 in)|
|1. FC Union Berlin|
|2001–2002||Eintracht Frankfurt II||14||(0)|
|2002–2005||Hannover 96 II||48||(0)|
|2005||→ 1899 Hoffenheim II (loan)||13||(0)|
|2006–2007||→ 1899 Hoffenheim (loan)||23||(0)|
|2012–||1. FC Union Berlin||95||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 22:27, 27 May 2015 (UTC).
† Appearances (Goals).
In Hoffenheim, Haas was one of the only two players who had been with Hoffenheim since their promotion to the 2. Bundesliga and then to the Bundesliga, the German top-flight. Although Hoffenheim's number 1, he never played over 25 games a season.
Along with Ramazan Özcan or Thorsten Kirschbaum contending for the role of netminder, Haas enjoyed a rather good playing time, with 23 starts in 2006—07 and 17 the next season. After Timo Hildebrand's arrival to the club of the Rhein Neckar Arena early in 2009, he had seen his appearances becomings less frequent as his last game came on 11 April, ending with a send off in the 61st minute of play.
Haas had recovered his starting position during the first half of the 2010–11 season, but was named second choice after the arrival of Tom Starke.
As of 25 December 2013[update]
|Club||Season||Division||Domestic League||Domestic Cup||European Competition||Total|
|Union Berlin||13–14||2. Bundesliga||19||0||3||0||0||0||22||0|
|Eintracht Frankfurt||01–02||2. Bundesliga||0||0||0||0||0||0||0||0|
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