Federer: 'It Was Extremely Complicated' Feb 15, 2018 Top seed Roger Federer reflects on his second-round match against Philipp Kohlschreiber at the ABN AMRO World Tennis Tournament in Rotterdam. Watch live matches at tennistv.com. Tags: 2018 Interviews Roger Federer Rotterdam Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus