NOAH Lyles retained his 200 metres title as U.S. sprinters secured their second podium sweep while Shericka Jackson and Shelly-Ann Fraser-Pryce made it a 1-2 finish for Jamaica in the women's event at the World Championships on Thursday. Lyles, bronze medallist at the Tokyo Games, scorched to victory in 19.31 seconds to become the third-fastest athlete of all time over the distance and break four-time Olympic champion Michael Johnson's national record. Five days after Fred Kerley led a U.S. 1-2-3 in the 100m, Lyles produced another dominant performance to clinch gold ahead of Tokyo runner-up Kenny Bednarek in 19.77 while…