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,

May 30, 2017, 10 a.m. EDT

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

by David Epstein,

Aug. 4, 2016, 8 a.m. EDT

How Russia Hid Its Doping in Plain Sight

by David Epstein,

Nov. 9, 2015, 6:45 p.m. EST

The Human Reasons Why Athletes Who Dope Get Away With It

by David Epstein,

Aug. 31, 2015, 8 a.m. EDT

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

by David Epstein,

Aug. 20, 2015, 8 a.m. EDT

Alberto Salazar Disputes Allegations — Some of Which Were Never Made

by David Epstein,

June 24, 2015, 11:03 p.m. EDT

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

by David Epstein,

June 17, 2015, 10:16 a.m. EDT

More Athletes Say Track Coach Alberto Salazar Broke Drug Rules

by David Epstein,

June 12, 2015, 12:34 p.m. EDT

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

by David Epstein,

June 3, 2015, 1:03 p.m. EDT

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

by David Epstein,

Dec. 18, 2014, 12:33 p.m. EST

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

by David Epstein,

May 8, 2014, 10:59 a.m. EDT

Cheat Sheet: The Tyson Gay File

by David Epstein,

May 2, 2014, 5:30 p.m. EDT