Olivier Rochus (] ; born 18 January 1981) is a retired Belgian tennis player. He has won two singles titles in his career and in 2004 won the French Open doubles title partnering fellow Belgian Xavier Malisse. Rochus' career-high singles ranking is World No. 24.

Based on the paragraph above can we conclude that "Rochus retired from tennis at the age of 30. "?
It's impossible to say