This country’s chief medal contenders Sada Williams and Jonathan Jones continued their impressive recent form on the track with victories in their respective 400m heats yesterday at the 2022 Commonwealth Games to emphatically qualify for this weekend’s semi-finals. The 24 year-old Williams, fresh from capturing a World Chamionship bronze, won the third heat of the women’s 400m in a cool and comfortable time of 51.66 seconds, hardly breaking a sweat …