 Complete the following phrase:  The highlight of her career was at the 1988 Seoul Olympics, where she won a silver medal in the 200m behind Florence Griffith-Joyners still-standing world record of 21.34. Jackson ran a Jamaican record time of 21.72 seconds that was .01 seconds short of the pre-Olympic world record Griffith-Joyner broke. In the process, she finished ahead of then-200m World Champion Silke Moller 5th, Heike Drechsler 3rd and teammate Merlene Ottey 4th. Ottey would regain the Jamaican record in 1990. She won a silver medal in the 200m at the 