Career
Marshall competed in the 100 m, 200 m and 4x100 m Relay. Her best result was anchoring the United States 4x100 m relay team to the gold medal at the 1987 World Championships Rome Italy, in a time of 41.58 Czech Republic which still ranks as one of the fastest times ever. She clocked an impressive 10.11 for her final 100 m which saw her bring the team home almost half a second ahead of the German Democratic Republic team anchored by Marlies Göhr (1041 secs).
Pam came 8th in the 100 m and fourth in the 200 m at the same Championship.
She went on to make the United States of America Olympic team over 200 m the following season, however due to injury did not get past the preliminary rounds.