London: World number one Rafael Nadal said he was saddened to see old rival Roger Federer knocked out of Wimbledon as the 16-time Grand Slam title winner slumped to a landmark defeat to Jo-Wilfried Tsonga. (Related:Nadal sets up semi-final clash with Murray | Nadal looks to bring Playstation triumphs to life)
Nadal, whose epic history with the great Swiss has stretched to 25 matches down the years, was stunned by seeing Federer lose a first Grand Slam match when two sets to love up.
"I am sorry for him. He was playing really good tennis in Roland Garros four weeks ago, and during this tournament I saw him play really, really well," said the Spaniard.