Men's 100m
Who: Abdullah Abkar Mohammed (Saudi Arabia), Noah Lyles (USA), Nigel Ellis (JAM), Filippo Tortu (Italy), Tlotliso Leotlela (South Africa), Jack Hale (AUS), Mario Burke (Barbados)
When: Heats on Tuesday, July 19, at 12:05 p.m. local time; Semifinal on Wednesday, July 20, at 7:20 p.m. local time; Final on Wednesday, July 20, at 9:35 p.m. local time
Why: Noah Lyles hopes to keep the 2014 title won by fellow American Kendal Williams in the U.S. The No. 4-all-time U.S. performer is ranked No. 2 here behind Saudi Arabia's Abdullah Abkar Mohammed, who ran a wind-legal 10.04 this year. Seven athletes are seeded at 10.21 or faster, including Jamaican Nigel Ellis -- who false-started at the U20 national championships, but won the ISSA Girls & Boys Champs in March. The PUMA-sponsored athlete is also a top entrant in the 200m against the United States' other top male sprint medal hope, Michael Norman.
Lyles set the national high school record in the 200m at 20.09 while placing fourth at the U.S. Olympic Team Trials. Don't be surprised if racing Mohammed pushes him under Trentavis Friday's 2014 100m national record of 10.00.
Noah Lyles after breaking the national high school record in the 200m at the U.S. Olympic Trials: