It all comes down to hair. The hair on a new tennis ball tends to be smoothed flat, while a ball that's been knocked around a bit will be more fluffy. Tennis players may check three balls or more before serving so that they can select one smooth ball and one fluffy ball. The articles goes on to research into the optimum serving strategy for tennis players.

Serena Williams is one win away from completing the Serena Slam.

The All England Croquet and Lawn Tennis Club begins its first lawn tennis tournament at Wimbledon, then an outer-suburb of London. Twenty-one amateurs showed up to compete in the Gentlemen’s Singles tournament, the only event at the first Wimbledon. The winner was to take home a 25-guinea trophy.

Maria Sharapova faces Serena Williams for a place in the Wimbledon final having not beaten the American for 11 years.

It was easy as 1-2-3 for former Wimbledon champions Novak Djokovic, Roger Federer and Andy Murray in Wednesday's quarterfinals. Not so for No. 4 Stan Wawrinka.

Defending champion Novak Djokovic fights back from two sets down to level his match against Kevin Anderson before bad light stops play.

Britain's Andy Murray overcame the big serving of 6ft 11in Ivo Karlovic to reach the Wimbledon quarter-finals for the eighth year in a row. The 2013 champion, seeded third, won 7-6 (9-7) 6-4 5-7 6-4 in three hours and three minutes on Centre Court.

A quick infographic as we start the second week of play

It's about respect, Bernard Tomic says, but he's not getting much of that online

Gael Monfils hits a staggering shot in mid-flight against countryman Gilles Simon.

Bernard Tomic has reignited his simmering war with Tennis Australia after unleashing a brutally scathing attack on tennis legend Pat Rafter and TA chief executive Craig Tiley.

BBC Sport's Tom Fordyce looks at what is happening to Rafael Nadal after his surprise loss to qualifier Dustin Brown.

Defending champion Novak Djokovic and Stan Wawrinka power into the fourth round at Wimbledon, but Grigor Dimitrov is out.

With the ball coming at him somewhat awkwardly, Federer — clearly enjoying himself — takes some adjustment steps and does things the flashy way. A 6-4 6-2 6-2 win over American (world no. 36) Sam Querrey.

German qualifier and world no.102 Dustin Brown beats two-time champion Rafael Nadal in four sets to move into the third round of the men's singles. Brown now holds a 2-0 record against the Spaniard, having beaten him in Halle last year. Nadal has not made it past the fourth round at Wimbledon since 2011, when he lost to Novak Djokovic in the final.

Novak Djokovic makes short work of Jarkko Nieminen on a day when the temperature hits a record 41.2C at Wimbledon.

Temperatures at Wimbledon this week could reach an all-time high.

How much do you know about Wimbledon - test your knowledge in a quiz which is as much about the trivia as the tennis.

Former champions Andy Murray and Pat Cash demonstrate what makes the perfect tennis serve for Wimbledon.

ATP World Tour’s statistical guru Greg Sharko previews Wimbledon by taking a look at Federer's statistical dominance. Part 1 of 3.