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Chasing an Edge

Investigating Drug Use in Track and Field

ProPublica is examining doping and unorthodox medicine in the big-money world of professional sports, and why it’s so hard to police.

Doctor’s Records in U.S. Doping Investigation Don’t Match Patients’ Copies

by David Epstein for ProPublica and Mark Daly, BBC,

On Eve of Olympics, Top Investigator Details Secret Efforts to Undermine Russian Doping Probe

by David Epstein,

How Russia Hid Its Doping in Plain Sight

by David Epstein,

The Human Reasons Why Athletes Who Dope Get Away With It

by David Epstein,

Speed Bumps: Why It’s So Hard to Catch Cheaters in Track and Field

by David Epstein,

Alberto Salazar Disputes Allegations — Some of Which Were Never Made

by David Epstein,

Elite Runner Had Qualms When Alberto Salazar Told Her to Use Asthma Drug for Performance

by David Epstein,

More Athletes Say Track Coach Alberto Salazar Broke Drug Rules

by David Epstein,

Off Track: Former Team Members Accuse Famed Coach Alberto Salazar of Breaking Drug Rules

by David Epstein,

In a Rare Sanction, Top Track Coach Gets Eight-Year Suspension

by David Epstein,

Weak Sanction for Sprinter Gay Signals Change in Anti-Doping Tactics

by David Epstein,

Cheat Sheet: The Tyson Gay File

by David Epstein,