Watch as Elmo sits in an umpire's chair and debates the two letters found on Federer's On-branded sneakers: Is it 'Q' and 'C' or 'O' and 'N'?

Follow live text commentary, score updates and match stats from Crystal Palace vs Newcastle United in the Women's FA Cup ...

The left-hander picked up his second Top 10 win over an American this week by ousting reigning champ Tommy Paul.