Big spenders PSG and Manchester City fluffed their lines in the opening round of Champions League matches much to the delight of Liverpool and Lyon fans. Real Madrid began their quest for a fourth consecutive title with a 3-0 stroll past Roma.
While 36-year-old Serena Williams lost the plot during the final, Naomi Osaka, 16 years her junior, remained cool and calm to become the first Japanese player to win a Grand Slam title. Novak Djokovic claimed the men's title for the third time. The Serb, with 14 majors, equals the feats of his hero Pete Sampras.
Three Australian cricketers including skipper Steve Smith were banned from the international game for their roles in a ball-tampering plot during the third Test against South Africa. The skulduggery overshadowed the host's first home series win over the Australians since 1970.
For the second season running, PSG failed to progress past the last 16 of the Uefa Champions League. Sports Insight presenter Paul Myers looks at the options for the club with RFI's roving reporter Andy May.
A few weeks after winning his 20th Grand Slam trophy at the Australian Open, Roger Federer returned to number one in the men's rankings following his quarter-final victory at the Rotterdam tournament. At 36 years and 195 days, he is the oldest man to head the ATP lists since they were computerised in Augst 1973.
After two defeats in Grand Slam finals, it was third time lucky for Denmark's Caroline Wozniacki. She claimed her first major with a gutsy three set win over the top seed Simona Halep in the Australian Open final. Wozniacki also rose to world number one for the third time in her career.
Nearly 15 years after his first major at Wimbledon, Roger Federer won his 20th title by beating Marin Cilic in the final of the Australian Open. It was a record equalling sixth triumph in Melbourne to add to his eight Wimbledon titles, five US Opens and one French Open. Unsurprisingly, the 36-year-old says there are no plans to retire.
Pep Guardiola's managerial career yielded silverware every season until 2016/2017 when he had no new baubles to polish at Manchester City. However, a joyous harvest looms. This week his side - 12 points clear in the Premier League - reached the final of the English League Cup. They're also fighting on two other fronts.
The unexpected death of Cyrille Regis at the age of 59 unleashed tributes from the world of British football and campaigners for equality. He plied his trade at a time when black professional footballers were rare and racial abuse from the terraces was prevalent. In his pomp, he scored goals of savage beauty. Off the field his grace was legendary.
Serena Williams won the 2017 Australian Open while she was pregnant. Four months after the birth of her first child, she says she will not defend her crown. The 36-year-old conceded she is unable to reach the necessary levels to win a 24th singles title.