Bob Simpson
Cricket
The Australian selectors turned to the 41-year-old to save them during the World Series Cricket turmoil in April 1977. It was almost 10 years after his last test. Simpson secured a 3-2 victory in six tests against India, scoring 539 runs at 44.92. However, Australia were beaten 3-1 in five tests by the West Indies in 1978. Simpson's form dipped, scoring 199 runs at 22.11. He wasn't required to don the baggy green again but resurrected Australia as coach in the 1980s.
Michael Phelps
Swimming
Why re-test the waters? What will adding to 18 gold, two silver and two bronze Olympics medals achieve? Only Phelps knows, but news he's a slave to the black line again, a la Mark Spitz and Ian Thorpe, was predictable. Phelps is 28 and odds favour his legacy losing its lustre, but that's not the mindset that made him an Olympic champion. Intrigue builds.
Sir Mark Todd
Equestrian
Retired after the Sydney Olympics aged 44; returned to elite eventing for the Beijing Games and won his fourth Badminton title in 2011. A renowned horse whisperer, Todd was the oldest winner since the event began in 1949. His key attribute? Self-assurance. "I seem to have an ability to cope. Pressure brings out the best in me."
Monica Seles
Tennis
A 25cm kitchen knife savaged the 19-year-old in her pomp, having racked up eight grand slam titles in three years. Unemployed lathe operator Gunter Parche stabbed the blade 1.5cm between Seles' shoulder blades on court in Hamburg on April 30, 1993. He couldn't stand the thought of Seles keeping his compatriot Steffi Graf from the No 1 ranking. Seles' mojo never fully returned but she managed to win the 1996 Australian Open.
Niki Lauda
Motor racing
The reigning Formula One champion won four of the first six races in 1976 before crashing at Germany's Nurburgring. Lauda was trapped in his Ferrari, suffering severe head burns and lung damage. Despite disfigurement and a championship defeat to James Hunt, he returned to win the following year and retired in 1979. Three years later he returned. He won his third world championship in 1984.
Michael Jordan
Basketball
"I'm back" entered the press release hall of fame on March 18, 1995 when His Airness announced his return to the Chicago Bulls for the 1995-96 NBA season after struggling with the transition to baseball. The Bulls went on to win three consecutive titles (1996-98) to back up the previous three (1991-93) prior to Jordan's original "retirement". As part-owner of the Washington Wizards he returned to the court in 2001; glory eluded him.
Fanny Blankers-Koen
Athletics
Social mores indicated becoming a mum in 1941 was tantamount to retiring. Instead Blankers-Koen, known as "The Flying Dutchmam" or in keeping with the patronising mood of the era "The Flying Housewife", kept breaking records. In 1948 she became the first female track and field athlete to win four gold medals at the same Olympics. More importantly she dismantled prejudice about gender, age and motherhood in the process.
Sir Brian Lochore
Rugby
The retired All Black captain answered an SOS to play the Lions at Wellington in 1971 as a lock. He wrote the legendary, "Gone to Wellington, playing test tomorrow", note which he left on the kitchen table for wife Pam...but that's where the fairytale ended. New Zealand were beaten in the third test and lost the four-test series 2-1.
Greg Searle
Rowing
Buying a Rhodesian Ridgeback puppy was just one of myriad tasks on his family to-do list once he'd collected bronze, as a 40-year-old, in the British rowing eight at the London Olympics. The hours of sacrifice were worth it for an athlete who had a gold (Barcelona coxed pairs) and bronze (Atlanta coxless four) but spent 16 years in the Olympic wilderness including a spell as an America's Cup grinder.