Usain Bolt has to hand back one of his nine Olympic gold medals after Jamaican team-mate Nesta Carter tests positive for a banned substance.
Dylan Hartley is confirmed as England’s captain for the Six Nations – two days after his six-week suspension for striking ends.
Scott Jamieson is heartened by Tommy Fleetwood’s success as the Scotsman bids for a second European Tour title in Qatar.
Australia international Joe Mennie suffers a “small fracture” to his skull and a “minor brain bleed” when struck by a ball during a net session.
Liverpool forward Philippe Coutinho signs a new five-year contract worth about £150,000 a week, making him the club’s highest-paid player.
Six-time champion Serena Williams outplays Britain’s Johanna Konta to reach the semi-finals of the Australian Open.