When 14-year-old Romanian gymnast Nadia Comaneci scored the first perfect 10 at the 1976 Summer Olympic Games in Montreal, it was so unexpected that the scoreboard malfunctioned.

The serious, dark-eyed teen smiled at the judges and was already warming up for the next event, when her unprecedented mark flashed on the scoreboard: 1.00. The device could not show a 10.00 because there had never before been one in the history of the sport. Her series of flips and spins on the uneven bars capped by a flawless dismount lasted only 19 seconds -- but will live on in history forever. Comaneci would notch six more perfect 10s at those Olympic Games and a place in the hearts of untold millions around the world. This is a manifest of united hearts by sport.