US sprinter Quincy Wilson (© World Athletics 
Dan Vernon)
Quincy Wilson improved his own world U18 400m best to 44.10, while T'Mars McCallum stormed to a 200m world lead of 19.73 at the Ed Murphey Classic, a World Athletics Continental Tour Silver event, in Memphis on Saturday (12).
Wilson, who turned 17 in January, took a tenth of a second off the world U18 best of 44.20 he set in Gainesville a year ago to win the race ahead of his US compatriot and fellow Olympic 4x400m gold medallist Bryce Deadmon (44.39). Jamaica’s Delano Kennedy was third in 45.00.
Wilson’s 44.10 is the joint fourth-fastest 400m in the world so far this season.
USA’s McCallum ran 19.83 in Jacksonville in May and, like Wilson, the 21-year-old improved his previous best by a tenth of a second, clocking 19.73 (1.8m/s) for the fastest 200m in the world so far this year.
The performance saw him regain the world lead from Olympic champion Letsile Tebogo, who clocked 19.76 in Eugene earlier this month.
McCallum also won the pre-programme 100m in Memphis 90 minutes earlier in a wind-assisted 9.87 (2.1m/s).
McKenzie Long won the women’s 200m in 21.93 (1.2m/s) – the third-fastest performance of her career and again a tenth of a second off her PB set last year – to move to second on this season’s top list. Favour Ofili was runner-up in 22.00.
Britton Wilson took the 400m in 50.54 and Alaysha Johnson the 100m hurdles in a wind-aided 12.27 (2.1m/s).
Shafiqua Maloney won the 800m in 1:58.13 ahead of Ajee’ Wilson (1:59.53). Carey McLeod soared 8.24m to top the long jump and world champion Laulauga Tausaga threw 62.38m to win the discus.
