Gyau with St. Pauli in 2012.
|Full name||Joseph-Claude Gyau|
|Date of birth||September 16, 1992|
|Place of birth||Tampa, Florida, United States|
|Height||1.75 m (5 ft 9 in)|
|2007–2009||IMG Soccer Academy|
|2011–2014||1899 Hoffenheim II||56||(9)|
|2012–2013||→ FC St. Pauli (loan)||15||(0)|
|2013||→ FC St. Pauli II (loan)||2||(1)|
|2014–||Borussia Dortmund II||8||(2)|
|2007–2009||United States U17||28||(2)|
|2010–2011||United States U20||4||(4)|
|2012–2013||United States U23||4||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of September 24, 2014.
† Appearances (Goals).
Born in Tampa, Florida, he grew up in Silver Spring, Maryland, where he played youth soccer for the nearby Bethesda Roadrunners before joining the IMG Soccer Academy in 2009. Gyau is of third-generation pedigree of professional footballers, being the son of former U.S. international Philip Gyau and the grandson of Joseph "Nana" Gyau, a former Ghanaian international.
On August 30, 2012, Gyau was loaned to 2. Bundesliga side FC St. Pauli from TSG 1899 Hoffenheim for the entire season, with an option for another season. Gyau made his first team debut for Hoffenheim on April 26, 2014 coming on in the final 21 minutes of a 0–0 draw against Eintracht Frankfurt. On June 30, 2014, Borussia Dortmund announced the completion of a transfer agreement for Gyau to join its Under-23 squad. On September 24, 2014, Gyau made his first team debut for Borussia Dortmund against Vfb Stuttgart, coming on in the 74th minute of the match which ended in a 2-2 draw. 
Gyau has been capped for the United States at the U-15, U-17, U-20, and U-23 levels and is currently a member of the U-23 team pool. In March 2012, Gyau was called into the US U-23 Men's Olympic Qualifying team.
Gyau's first start for the US Men's National Team was September 3, 2014 against the Czech Republic in a friendly match.
Gyau made his second start for the national team on October 10, 2014, in a friendly match against Ecuador. After playing less than 15 minutes, Gyau came off the pitch with a suspected sprained left knee and was replaced by Bobby Wood.  On October 12, it was announced that Gyau had torn his lateral meniscus and suffered a bone bruise. 
- "Gyau loaned out to FC St. Pauli". TSG 1899 Hoffenheim. August 30, 2012. Retrieved September 29, 2012.
- Seltzer, Greg (April 26, 2014). "American Exports: John Anthony Brooks gets back on USMNT radar; Joe Gyau makes Bundesliga debut". Major League Soccer. MLSSoccer.com. Retrieved April 26, 2014.
- Floyd, Thomas (30 June 2014). "Borussia Dortmund signs U.S. prospect Joe Gyau". Goal.com Edition: America. Goal.com. Archived from the original on 1 July 2014. Retrieved July 1, 2014.
- "Caleb Porter Names 19 Players to U-23 Men's National Team Training Camp Roster". US Soccer. Retrieved March 12, 2012.
- Goff, Steven (November 12, 2012). "U.S. roster for Russia friendly". washingtonpost.com. Retrieved April 14, 2013.
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