 At the age of just 17 she participated in the 1958 Commonwealth Games and reached the semi-final of the 100 yd event, but more significantly she was a member of the English 4 × 110 yards relay team alongside Madeleine Weston, June Paul and anchor Heather Armitage that won the gold medal and set a new world record of 45.37 seconds in the process.Later in 1958 she competed in the European Athletics Championships and won a silver medal as part of the English women's 4 × 100 m relay team, a result that set the platform for her to compete at a global level in the 1960 Summer Olympics.Although Hyman was not expected to rank amongst the medallists at the Olympics, and likely not even reach the finals, she finished first in both her heat and semifinal runs for the 100 metres.