All three U.S. men advanced safely out of the 110m hurdle preliminary rounds.



Jeff Porter finished an obvious second behind Omar McLeod in heat one, but McLeod was letting up at the line when Porter was leaning toward the finish. McLeod is the favorite to win gold in Rio after running 12.98 in Shanghai earlier this season, and having a nearly flawless 2016.

Devon Allen qualified out of his section by running 13.41, tying with Greece's Konstadinos Douvalidis for the win. In his first major international competition, Allen hit one of the early hurdles and looked a bit off balance. The football player and track star at the University of Oregon has the second-fastest time in the world (13.03) and will go back to Eugene after the Olympics to get ready for the Oregon football season.

Ronnie Ash bounced back from his 2015 world championship false start disqualification by winning his section in 13.31.

Because of the heavy rain, an additional hurdle race will take place after tonight's regularly scheduled athletics program for athletes who did not qualify from sections one and two. If a competitor runs faster than any of the time qualifiers (listed below), they will advance to the semifinal.

Men's 110m Hurdles Semifinalists:

Auto Qualifiers:
13.27 Omar McLeod (JAM)
13.31 Dimitri Bascou (FRA)
13.31 Ronnie Ash (USA)
13.32 Orlando Ortega (ESP)
13.36 Pascal Martinot-Lagarde (FRA)
13.41 Konstadinos Douvalidis (GRE)
13.41 Devon Allen (USA)
13.50 Jeff Porter (USA)
13.50 Andrew Pozzi (GBR)
13.50 Gregor Traber (GER)
13.52 Balazs Baji (HUN)
13.52 Andrew Riley (JAM)
13.55 Lawrence Clarke (GBR)
13.56 Yordan L. O'Farrill (CUB)
13.59 Milan Trajkovic (CYP)
13.61 Eder Antonio Souza (BRA)
13.63 Johnathan Cabral (CAN)
13.63 Joao Victor De Oliveira (BRA)
13.66 Jeffrey Julmis (HAI)
13.70 Antwon Hicks (NGR)

Time Qualifiers:
13.62 Yidiel Contreras (ESP)
13.63 Damian Czykier (POL)
13.64 Antonio Alkana (RSA)
13.65 Petr Svoboda (CZE)

Women's 400m Hurdles Semifinalists:

All three American women earned spots to compete in the semifinal of the 400m hurdles. 

17-year-old hurdle phenom Sydney McLaughlin had a gut-wrenching performance in the first heat. She faded to fifth overall in a finishing time of 56.32. But with the first three in each heat plus the next six fastest times advancing, McLaughlin's mark landed a time fast enough to advance into the semifinal. 

Olympic Trials runner-up and former Texas All American Ashley Spencer cruised to victory in heat three with a winning time of 55.12. Spencer crossed the line well ahead of runner-up Leah Nugent who finished in 55.66.

Spencer also competed in the 400m at the Olympic Trials and finished seventh in the final, but came back and claimed the runner-up and automatic Team USA spot in the 400m hurdles. 

Olympic Trials winner and world leader Dalilah Muhammad established herself out of heat five with a winning time of 55.33 to beat Noelle Montcalm. 

Muhammad has been experiencing a breakthrough year after posting a huge personal best of 52.88 at the Olympic Trials in July.

Auto Qualifiers:
54.88 Ristananna Tracey (JAM)
55.12 Ashley Spencer (USA)
55.20 Sara Slott Petersen (DEN)
55.33 Dalilah Muhammad (USA)
55.46 Eilidh Doyle (GBR)
55.54 Zuzana Hejnova (CZE)
55.55 Wenda Nel (RSA)
55.66 Leah Nugent (JAM)
55.78 Ayomide Folorunso (ITA)
55.89 Emilia Ankiewicz (POL)
55.93 Sage Watson (CAN)
56.07 Joanna Linkiewicz (POL)
56.07 Noelle Montcalm (CAN)
56.13 Janieve Russell (JAM)
56.14 Viktoriya Tkachuk (UKR)
56.24 Anna Titimets (UKR)
56.40 Grace Claxton (PUR)
56.61 Olena Kolesnychenko (UKR)

Time Qualifiers:
55.91 Yadisleidis Pedroso (ITA)
56.06 Stina Troest (DEN)
56.25 Janeil Bellille (TTO)
56.26 Lauren Wells (AUS)
56.32 Sydney McClaughlin (USA)
56.36 Denisa Rosolova (CZE)

The men's 110m hurdles and the women's 400m hurdles semifinals will take place 7:40 p.m. and 8:10 p.m. ET on August 16th.