Factbox - Sprint doping scandals since Johnson's downfall

(Reuters) - Twenty-five years ago this week, in the biggest scandal to hit the Olympics, Ben Johnson was stripped of his 100 metres gold medal at the 1988 Seoul Games after testing positive for banned steroids.

Johnson served a two-year suspension and returned to competition, reaching the semi-finals at the 1992 Barcelona Olympics, but the Canadian was banned for life in 1993 after testing positive for excessive levels of testosterone.

Following is a factbox on other doping cases in sprinting, since Johnson's downfall:

Katerina Thanou/Kostas Kenteris (Greece). Thanou (100 metres silver medallist in Sydney) and her Greek team mate Kenteris (Sydney 200 metres champion) were accused of faking a motorcycle crash just before the 2004 Athens Olympics to skip a dope test. They were later given two-year bans.

Katrin Krabbe (Germany). Double sprint champion at the 1991 world championships in Tokyo who never competed at an Olympics after a ban for the anabolic agent clenbuterol.

Linford Christie (Britain). At 32, the oldest man to win the Olympic 100 metres title with victory in Barcelona in 1992. Seven years later, in semi-retirement, tested positive for the steroid nandrolone.

Dennis Mitchell (U.S.). The American, who won gold as part of the U.S. 4x100 metres relay team at the 1992 Barcelona Olympics, was banned for two years in 1998 for excessive levels of the male sex hormone testosterone.

Merlene Ottey (Slovenia). Jamaican-born sprinter who won world 200 titles but was banned from the 1999 Seville world athletics championships after a positive test for nandrolone. Later cleared by the International Association of Athletics Federations (IAAF).

Dwain Chambers (Britain). Finished fourth in the 100 final at the 2000 Sydney Olympics but was banned for two years in 2003 after testing positive for the designer steroid THG in the BALCO laboratory scandal.

Tim Montgomery (U.S.). Also implicated in the doping scandal that engulfed the San Francisco BALCO laboratory. The American set a 100 metres world record of 9.78 in 2002 but later admitted to doping at the 2000 Sydney Olympics.

Marion Jones (U.S.). Montgomery's partner and the biggest victim of the BALCO scandal, Jones became the first woman to win five track and field medals at a single Olympics at Sydney 2000 After years of denial, she confessed to being a drugs cheat and was jailed for lying to federal investigators.

Kelli White (U.S.). Another BALCO victim who admitted to using a cocktail of drugs after winning the 100-200 double at the 2003 Paris world championships.

Justin Gatlin (U.S.). The American, who won gold in the 100 at the 2004 Athens Olympics, has served two doping bans, including four years for excessive levels of testosterone. He won 100 metres bronze at the 2012 London Olympics and two silvers at this year's world championships.

Veronica Campbell-Brown (Jamaica). Twice Olympic 200 metres champion who is suspended after testing positive for a banned diuretic at a meeting in May this year.

Sherone Simpson (Jamaica). Gold medallist at the 2004 Olympics in Athens and a silver medallist last year in London as part of Jamaica's 4x100 metres relay teams, Simpson tested positive for the banned stimulant oxilophrine at June's Jamaican athletics championships.

Asafa Powell (Jamaica). Held the 100 world record between 2005 and 2008. Tested positive for oxilophrine at the national championships in June.

Tyson Gay (U.S.). Completed a memorable sweep of sprint titles at the 2007 world championships in Osaka when he won the 100 and 200 metres and was part of the triumphant U.S. 4x100 metres relay team. Tested positive for a unidentified substance in an out-of-competition test in May this year.

Kelly-Ann Baptiste (Trinidad & Tobago). A member of Gay's training group and 2011 world 100 metres bronze medallist, she withdrew from August's Moscow world championships on the opening day of competition for a doping violation.

(Compiled by Tom Bartlett; Editing by Alison Wildey)

Matches

MORE TOP STORIES TODAY

Rajasthan edge low-scoring thriller

Rajasthan edge low-scoring thriller

The bowlers restricted Hyderabad to 133 for 6 before Rahane and Binny took Rajasthan over the line. More »

Maxwell blitz takes Punjab home

Maxwell blitz takes Punjab home

The Kings XI batsman blasted a 43-ball 95 to help his team pull off a massive chase against Chennai Super Kings. More »

Bangalore vs Mumbai: A battle of the big-hitters

Bangalore vs Mumbai: A battle of the big-hitters

As two of the most glamorous sides in the Indian T20 league, the focus of the match between Mumbai and Bangalore will invariably be on the middle-order… More »

BCCI lacks leaders to take on Srinivasan, says Manohar

BCCI lacks leaders to take on Srinivasan, says Manohar

Two former BCCI presidents, Shashank Manohar and Jagmohan Dalmiya, have reacted strongly to the news of the BCCI calling an emergent meeting on Sunday… More »

Pietersen ridicules idea of day-night Tests

Pietersen ridicules idea of day-night Tests

Kevin Pietersen has ridiculed the idea of day-night Test cricket, saying the game would be so different to proper Test cricket that we will need a whole… More »

Beleaguered Yuvraj tees off to Sharjah's delight

Beleaguered Yuvraj tees off to Sharjah's delight

Yuvraj Singh was hardly convincing to begin with against Delhi, but a big dose of crowd support and a helping of poor bowling meant he had the opportunity… More »

Stressed Trott stands down again

Stressed Trott stands down again

The England and Wales Cricket Board (ECB) on Friday confirmed that batsman Jonathan Trott is to take another break from all cricket with immediate eff… More »

PCB starts another coach hunt

PCB starts another coach hunt

The PCB has decided to not extend the contracts of head coach Moin Khan, fielding coach Shoaib Mohammad and batting consultant Zaheer Abbas, and has invited… More »

Pakistan cricketers face probe

Pakistan cricketers face probe

Pakistani cricket authorities have launched an investigation after a number of current international stars played in exhibition matches in the United States… More »

Fiery star Stokes bids to curb his temper

Fiery star Stokes bids to curb his temper

England all-rounder Ben Stokes admits he must keep his anger under control if he is to end his international exile. More »

Bangalore's arsenal blazes to victory

Bangalore's arsenal blazes to victory

Yuvraj Singh was back to his best in his first match for Royal Challengers Bangalore. More »

BCCI to meet before next court hearing

BCCI to meet before next court hearing

The BCCI will hold an emergent working committee meeting on April 20 to discuss the future course of action with regard to the Supreme Court hearing concerning… More »

Gavaskar wants a clean IPL

Gavaskar wants a clean IPL

"Integrity is non-negotiable..." says the BCCI's interim chief ahead of Season 7 of the tainted league. More »

Time for Chennai to enter familiar cocoon

Time for Chennai to enter familiar cocoon

Chennai have an emphatic 8-3 lead in the head-to-head with Punjab, with one game tied More »

Kallis, Narine star in KKR win

Kallis, Narine star in KKR win

An all-round display saw Knight Riders thump Mumbai Indians by 41 runs in the IPL-7 opener. More »

'Yak' Kallis still on top of his game

'Yak' Kallis still on top of his game

The 38-year-old South African veteran turned it on for Kolkata Knight RIders in the opening match of IPL-7. More »

Rajasthan and Hyderabad face-off

Rajasthan and Hyderabad face-off

A quality that defines Rajasthan and Hyderabad is consistency. Rajasthan was one among two teams to enjoy complete dominance at home last season. Hyderabad… More »

Srinivasan named in fixing report: SC

Srinivasan named in fixing report: SC

The court emphasised that the tainted administrator can no longer work for the BCCI. More »

Yuvraj happy to play for RCB: Kohli

Yuvraj happy to play for RCB: Kohli

New-look RCB will play their first game of IPL-7 on Thursday. More »

IPL: News Line

IPL: News Line

A round-up of all the news from this season of the IPL. More »

Shane Watson issues moral warning

Shane Watson issues moral warning

'Everyone knows what is right and what is wrong and if you do the wrong thing it will be found out' More »

Why I'm not looking forward to the IPL

Why I'm not looking forward to the IPL

Welcome to another season of a league that many watch but few trust. More »

Johnson may quit T20s for Tests

Johnson may quit T20s for Tests

Australia's Mitchell Johnson may quit limited-overs cricket to prolong his test career with an eye on the 2015 Ashes series in England, the fast bowler… More »

Nepal players call off boycott

Nepal players call off boycott

Thaw in relations after formation of an advisory committee that would work in tandem with the Cricket Association of Nepal. More »