WATCH LIVE: Federer wins opening set, Djokovic enters last 16 (ESPN): livio acerbo on lacer2k and greengroundit WATCH LIVE: Federer wins opening set, Djokovic enters last 16 (ESPN): livio acerbo on lacer2k and greengroundit Gennaio 20, 2018 January 20, 2018 at 11:41AM from ESPN via http://espn.go.com/