2011 Concurso Internacional de Tenis – San Sebastián  The 2011 Concurso Internacional de Tenis – San Sebastián was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which is part of the 2011 ATP Challenger Tour. It took place in San Sebastián, Spain between 15 and 21 August 2011. The following players received wildcards into the singles main draw:  The following players received entry from the qualifying draw:   Albert Ramos def. Pere Riba 6–1, 6–2   Stefano Ianni / Simone Vagnozzi def. Daniel Gimeno-Traver / Israel Sevilla, 6–3, 6–4