The Tiburon Challenger is a professional tennis tournament played on outdoor hard courts. It is currently part of the ATP Challenger Tour. It has been held annually at the Tiburon Peninsula Club in Tiburon, California, United States, since 2003.

Tobias Kamke is a German former professional tennis player. He was ranked as high as world No. 64 in singles by the Association of Tennis Professionals (ATP), which he first achieved in January 2011. In 2010, Kamke was awarded Newcomer of the Year by the ATP after slashing his singles ranking from No. 254 to No. 67 by year-end following four finals on the ATP Challenger Tour, having beaten emerging players Milos Raonic and Ryan Harrison in two of the finals for the titles, and a third round appearance at the Wimbledon Championships, his career-best performance at a major. Kamke announced his retirement in July 2022 and played his last professional match at the Hamburg European Open.