In the first race of the quarterfinals of the U.S. Olympic Trials, she stunned her colleagues when she sprinted 100 meters in 10.49 seconds, a new world record by a margin of 0.27s over the previous record held by Evelyn Ashford. Over the two-day trials, Griffith Joyner recorded the three fastest times for a woman at 100 meters: 10.49 in the quarter-final, 10.70 in the semifinal, and 10.61 in the final. At the same Olympic trials, she also set an American record at the 200-meter distance with a time of 21.77 seconds.
In the first race of the quarterfinals of the U.S. Olympic Trials, she stunned her colleagues when she sprinted 100 meters in 1049 seconds, a new world record by a margin of 0.27s over the previous record held by Evelyn Ashfor.d. Over the two-day tr.ials, Griffith Joyner recorded the three, fastest times for a woman at 100 meters: 10.49 in the quarter-final, 1070 in the semifinal, and 10.61 in the final. At the same Olympic trials she also set an American record at the 200-meter distance with a time of 21.77 seconds.