US sprinter Sha’Carri Richardson eased through from the women’s 100 metres heats on Thursday, while Jakob Ingebrigtsen conserved energy in the 1,500m and Ukraine’s biggest gold medal hope Yaroslava Mahuchikh qualified first in the women’s high jump. World champion Richardson, whose chances of Paris gold have been boosted by Rio and Tokyo champion Elaine Thompson-Herah missing out through injury, ran the quickest time in her heat of 10.94 seconds ahead of Saturday’s semi-finals and final. Jamaican Shelly-Ann Fraser-Pryce, 37, is seeking a third sprint gold in her fifth and final Games. She qual…