Former Swedish tennis player Peter Lundgren, who also coached Roger Federer early in the Swiss player's career, has passed away at the age of 59, his family said Friday. "One of the best has unfortunately left us far too soon," his son Lukas Lundgren wrote on Facebook. Lundgren was part of the wave of Swedish tennis players in the 1980s that followed in the wake of icon Bjorn Borg, playing alongside the likes of Mats Wilander and Stefan Edberg. "Peter Lundgren was a wonderful person with a big heart and a lot of humour," Borg told Swedish daily Aftonbladet.