Secondary ticketing company Viagogo has secured US$15 million (£10 million) from investors including tennis greats Andre Agassi and Stefanie Graf.

Secondary ticketing company Viagogo has secured US$15 million (£10 million) from investors including tennis greats Andre Agassi and Stefanie Graf.

The company, which allows sports and music fans to buy and sell event tickets over the internet, has secured a total of $70 million of external investment, previously announcing $30 million in 2007 and $25 million in earlier rounds.

New investors Agassi and Graf, both of whom will join Viagogo’s advisory board, join existing backers including Lord Jacob Rothschild via his family office and Lastminute founder Brent Hoberman, as well as Danny Rimer, general partner at Index Ventures.

Agassi says he is looking forward to sharing his ‘relationships in sports’ and ‘experience in the industry’ to help the company achieve growth.

Viagogo was founded by its CEO Eric Baker, who sold his last company, US secondary ticketing company StubHub, to Ebay in 2007 for $307 million.