Walcott produced a best throw of 84.82m in the fifth round to take the win ahead of Latvian Patriks Gailums (83.30m) and Curtis Thompson of the USA (82.87m).
Bahamian Anthonique Strachan won the Women’s 200m in 22.66 ahead of Aminatou Seyni of Niger (22.71) and Jenna Prandini of the USA (22.82).
On the Men’s side, recently crowned NACAC champion Andrew Hudson of Jamaica was second in 20.47 behind the USA’s Kyree King (20.40). Charlie Dobson of Great Britain was third in 20.52.
Commonwealth Games champion Janieve Russell ran 55.25 for second in the Women’s 400m hurdles behind American Dalilah Muhammad (54.57). Finland’s Viivi Lehikoinen was third in 55.41.
Jamaica’s two-time World champion, Danielle Williams, will take on newly crowned World Indoor 60m champion and record holder, Devynne Charlton, as well as 2021 Olympic bronze medallist Megan Tapper.
World record holder Tobi Amusan and reigning Olympic champion Jasmine Camacho-Quinn are also set to line up on Saturday along with Americans Alaysha Johnson and Masai Russell.
The field is completed by Switzerland’s Ditaji Kambundji, 2022 World Indoor champion Cyrena Samba-Mayela and China’s Yanni Wu.
Reigning Olympic champion Hansle Parchment will compete alongside countryman Orlando Bennett in the 110mm hurdles.
Bajan two-time World Championship bronze medallist Sada Williams will line up in the 400m alongside Guyana’s Aliyah Abrams.
Bahamian Anthonique Strachan will take on some of the world’s best in the 200m.
Finally, Jamaica’s World Indoor 60m bronze medallist Ackeem Blake, 2011 World 100m champion Yohan Blake and reigning national 100m champion Rohan Watson will all line up in the 100m against a stacked field including the likes of American world champions Christian Coleman and Fred Kerley.
Thompson-Herah, who has been struggling to get back to her best after battling injury, ran a well-paced raced from a tidy break, but couldn’t get back to Richardson, who continues to display her superb form this season.
The American won in 10.88s, with another Jamaican Natasha Morrison (11.00s), running her heart out from lane one, to edge Thompson-Herah for second.
Thompson-Herah’s time bettered her previous season’s best of 11.06s, and though it is well off her personal best of 10.54s, it signals a step in the right direction since she started working with Shanikie Osbourne on a provisional basis.
Meanwhile, Shashalee Forbes (11.2s), the other Jamaican in the event, placed fifth, while Anthonique Strachan (11.39s) of the Bahamas failed to figure on this occasion, placing ninth.
