When teams were mathematically counted out, buried in standings, or trailing by impossible margins in final periods.
Major League Baseball
Trailing 3-0 in the series and trailing in the 9th inning of Game 4 against Mariano Rivera, Dave Roberts stole second base to ignite the first 0-3 postseason comeback in MLB history.
NBA Basketball
The Warriors set the single-season regular wins record (73-9) and took a 3-1 Finals lead. LeBron James and Kyrie Irving rallied Cleveland to the first 1-3 Finals turnaround.
UEFA Champions League
AC Milan led 3-0 at halftime with a star-studded lineup of Maldini, Nesta, Pirlo, Seedorf, and Shevchenko. Steven Gerrard orchestrated a three-goal blitz in six second-half minutes.
Formula 1 Racing
Given the last rites in hospital after a fiery crash burned his face and lungs at the Nürburgring, Lauda climbed back into his Ferrari cockpit just six weeks later in Monza.
Championship Golf
Ranked 1,199th in the world in 2017 after spinal fusion surgery, Tiger dismantled Amen Corner on Sunday to capture his 15th Major championship 14 years after his last Masters title.
NFL Championship
Examining the statistical precision of the 31-point rally: how New England ran 93 offensive plays to wear down Atlanta's defense in the first overtime in Super Bowl history.