Sebastian Korda moved into the Top 100 in world rankings after winning his second ATP Challenger Tour title in Quimper, France. He finished runner-up at the Delray Beach Open in January. (ATP Tour)

Roger Federer will return to tennis in Doha, at the Exxon Mobil Open. Federer hasn’t played in about a year and has undergone two knee surgeries. (CNN)

Australian Open will allow up to 30,000 fans per day in the stadium. Tennis is better with fans. (BBC)

Australian Open will feature lower prize money for tournament winners but higher prize money for early-round losers (TFS)

Australian Open will have electronic line calling on every court. No human line judges. That’s a first for a grand slam tournament. (Sky Sports)

What it’s like to be Rafael Nadal’s teammate (Tennis World USA)