July 21, 2016 5:58 AM EDT

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DEC

2014

2015

A German documentary is the first to claim Russia sponsored doping and cheating on drug tests, implicating the International Association of Athletics Federations (IAAF), then led by Lamine Diack.

AUG

A second documentary claims evidence of widespread doping on the basis of leaked IAAF data. Sebastian Coe succeeds Diack as IAAF chief and refutes the claims.

NOV

NOV. 9

The first part of a WADA investigation into the claims finds the Russian government complicit in a culture of cheating and urges bans for Russian athletes.

NOV. 13

The IAAF suspends Russia’s track-and-field team from international competition.

2016

JAN

The IAAF bans Russian athletics chief Valentin Balakhnichev for life for taking bribes. The second part of the WADA probe is released and accuses the IAAF of ignoring Russian doping.

MAY

Russia’s anti-doping-lab head Grigory Rodchenkov admits helping fake test results for 15 medal winners at the 2014 Winter Olympics in Sochi.

JULY

The International Olympic Committee says it will consider expelling Russia from the 2016 Games in Rio.

This appears in the August 01, 2016 issue of TIME.

Write to Julia Zorthian at julia.zorthian@time.com.

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