Nigeria’s Tobi Amusan, the reigning world champion and world record holder in the 100m hurdles has been cleared to compete at the upcoming world championships.

Here’s what you need to know:

– Last month, Amusan was charged with missing three drug tests within a 12-month period, a violation that could have potentially led to a two-year suspension under the AIU's regulations.

– The following statement was issued by the AIU: "A panel of the Disciplinary Tribunal, by majority decision, has today found that Tobi Amusan has not committed an Anti-Doping Rule Violation (ADRV) of three Whereabouts Failures within a 12-month period. AIU Head Brett Clothier has indicated the Athletics Integrity Unit (AIU) is disappointed by this decision and will review the reasoning in detail before deciding whether to exercise its right of appeal to the Court of Arbitration for Sport (CAS) within the applicable deadline. Amusan’s provisional suspension has now been lifted with immediate effect."

– The news of Amusan's provisional suspension cast doubt over her participation in the World Championships, scheduled to start next week. However, the swift action taken by the athlete's legal team expedited the case and led to a disciplinary tribunal that reviewed the evidence. In a significant development, the tribunal exonerated Amusan and lifted the provisional suspension and allowing her to defend her title.

– Last year, Amusan broke the 100m hurdles world record with a 12.12 (+0.9m/s wind) in the world championship semifinals. She ran a wind-aided 12.06 (+2.5m/s wind) to win gold in the final. She took eight hundredths off Keni Harrison’s 12.20 world record from 2016.

– Amusan was fourth at the Tokyo Olympics.

– Her 2023 season’s best is 12.34s, which is the fourth-fastest of the year behind U.S. champion Nia Ali, former world record holder Keni Harrison and Olympic champion Jasmine Camacho-Quinn.

What she said:

Amusan posted the following reaction on Instagram: "This morning I found out that the Independent Tribunal that heard my case has ruled that I did not violate the whereabouts rules and as a result, I will not be sanctioned & none of my results will be precluded. I am thrilled to put this behind me, and I look forward to defending my title at next week's World Championships. I generally have been & consistently will be an ally of CLEAN SPORT."

What comes next?

The first round of the women’s 100m hurdles is Aug. 22. The final is Aug. 24. No woman has won back-to-back world championship gold medals in the 100m hurdles since USA’s Michelle Perry won in 2005 and 2007.