MichaelSchumacher hung up his racesuit at the end of the 2006 season, bowingout of Formula One as a seven-time motorsport legend.
But itwasn't enough of a legacy to keep him off the track for good. The41-year-old is relishing a return for Mercedes and it remains to beseen whether it will be a heroic return, or one to sully his greatreputation.
To mark the occasion, Sportsmail celebrates our favourite comebacks, be they good or bad.
As always, we reveal 10 each day through the week till our No 1 is revealed on Friday.
And we want you to get involved and have your say.
Read Nos 40-3130 Jim Bouton Bouton retired midway through the 1970 season after the Astros sent him down to basbeball's minor leagues following his warts and all book Ball Four, chronicling the 1969 season.
A brief career in the media followed but the urge to play baseball would not leave him. He launched his comeback bid with the Class A Portland Mavericks in 1975, compiling a 5-1 record. He played for Atlanta Braves in 1978 before retiring for good.
Pitching in: Jim Bouton
29 Frank GiffordHe lost 18 months in the prime of his career when he was the victim of a hard tackle. During a 1960 game against the Philadelphia Eagles, he was cleanly blindsided by Chuck Bednarik on a passing play, suffering a severe head injury that led him to retire from football.
However, Gifford returned to the Giants in 1962, changing positions from running back to wide receiver. Despite his long layoff and having to learn a new position, he became a star once again and retired for good in 1964.
Tough guy: Frank Gifford
28 Justine HeninHenin announced her immediate retirement from professional tennis on 14 May 2008, and requested the Women's Tennis Association to remove her name from the rankings immediately.
Her first Grand Slam back was an instant success, reaching the Australian Open final in 2010 before losing in three sets. Now wants to carry on playing until the 2012 Olympics.
Superb comeback: Justine Henin lost the Australian Open Final this year
27 Tony AdamsThe Arsenal and (future) England skipper was imprisoned for four months in late 1990 but after being released, his alcoholism continued and he was involved in further problems - including playing through a match during the 1993-94 season despite being hungover, falling down stairs and needing 29 stitches to a head wound, and letting off fire extinguishers with team-mate Ray Parlour in a Pizza Hut where they were being taunted by supporters of rival clubs.
Came through all this to become England captain, playing for his country 66 times, and retired from football in 2002 after 672 matches for his only club - the Gunners
Back after prison: Tony Adams against Reading Reserves after his release from jail
26 Chris Del Bosco This 27-year-old Canadian cross-country skier had problems with substance and alcohol abuse that had led to him being stripped of two US national titles, and at age 21 was discovered drunk in a ditch with a broken neck.
Went into rehab from where he has enjoyed more success with the Canadian ski team. In 2006 at the Winter X-Games he won a bronze medal in the ski-cross event which he converted to a gold four years later and took a bronze at the Winter Olympics last month.
Winner: Chris Del Bosco (yellow top) wins gold in January
25 Michael JordanQuit playing for the Chicago Bulls in October 1993, citing a loss of desire for the game. Later said the murder of his father influenced his decision. Came back among huge hype in March 1995 and stayed on four another four yearsto make the Bulls almost unbeatable.
In 1999 he retired again only to resurface with the Washington Redskins in 2001. In 2003 he became the first 40-year -old to score 40 points in a game - he finished with 43 - and quit for good that same year.
I'm back: Michael Jordan on his return against Indiana Pacers in March 1995
24 Bobby SimpsonWhen Test cricket was decimated by the breakaway World Series Cricket in 1977, ex-Australia skipper Simpson made a comeback after a decade in retirement to captain New South Wales and Australia at the age of 41.All of Australia's first-choice players had defected apart from Jeff Thomson.
Simpson had been playing for Western Suburbs in Sydney Grade Cricket but had not been playing at first-class level for ten years. His first assignment was a five-Test series against India, and Simpson began where he left off a decade earlier. He top-scored with 89 in the second innings of the First Test in Brisbane, before scoring 176 and 39 as Australia won in Perth.
Good in any era: Aussie skipper Bobby Simpson
23 Roger MillaCameroon legend Milla first retired from international football in 1987 and eventually moved to R?ion in the Indian Ocean for his retirement. However, in 1990, he received a phone call from the President of Cameroon Paul Biya, who pleaded with him to come out of retirement and rejoin the national team.
He agreed, and went to Italy with the Indomitable Lions for the 1990 World Cup, scoring four goals and helping them through to the last eight.
Italia 90 star: Roger Milla netted four times
22 Greg LeMondIn 1986, LeMond became the first American cyclist to win the Tour de France. The following year he was accidentally shot and seriously injured in a hunting accident (by his brother-in-law). taking two years to recover before returning to win the Tour again in 1989 and 1990 becoming one of only eight men to have it three times or more.
He retired in 1994.
Shot but still a winner: Greg LeMond
21 James J. BraddockThe granite-chinned Irish American turned pro in 1926 and within three years had won 44 of his 48 fights but the pressure told and his right hand suffered recurring fractures. He had to quit boxing and worked as a docker but started training again despite his hand being so badly damaged.
Instead, he concentrated on his left hand and made it stronger than his right. In 1934 he returned to the ring as 'fodder' but beat title contender John Griffin. Three more wins followed before he stunned the boxing world by beating Max Baer on points in 1935 to become world heavyweight champion.
Two-handed: Jimmy Braddock
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