Roger Federer’s hopes of claiming a record-extending 20th grand slam title ended on Wednesday when he was beaten 7-5 3-6 7-6(8) 6-4 by Juan Martin del Potro in a thrilling U.S. Open quarter-final.
Mercedes' Lewis Hamilton took the outright championship lead for the first time this season with a dominant victory in the Italian Grand Prix.
Fourth seed Alexander Zverev has been knocked out of the US Open in four sets by Croatia's Borna Coric in New York.
Each summer, hundreds of millions of dollars change hands as the world’s top football clubs vie for the best players for the coming seasons. But what actually is a transfer, and how does it work?