Wheelchair race Kinghorn set a new mark in the 200 metres T53 as the 21-year-old got round the track at the Joe Selleh Track and Field venue at Arizona State University in 28.67sec, shaing 0.26 off the previous record held by US athlete Jessica Galli five years ago.

She finished the race in front of Kelsey LeFevour of the US while Bermuda’s Jessica Lewis came third.

Later on in the day, Kinghorn also topped the 800m podium.

In the women’s club throw F51 competition, Morrison added 36cm to the record set by Briton Jo Butterfield at the Rio 2016 Paralympic Games with a winning mark of 23.17m.

This means that Morrison has regained the world record which she lost to Butterfield.

However, she was unable to add a victory in the women’s discus event as fellow American Cassie Mitchell threw 12.85m to win.

Back on the track, there was lots to celebrate for the home crowd as Jarryd Wallace showed why he is top of the world rankings with a time of 22.16 in the men’s 200m T44.

His team-mate David Brown also tasted success over the same distance in the T11 race as he clocked 23.70 en route to victory.

There were several other 200m races held during the day’s competition with Americans Erik Hightower, Brett Gravatt and Regas Woods won the T54, T53 and T42 respectively.

US women also topped podiums over 200m with Cheri Madsen, Jaleen Roberts, Sophie Munter and Amy Watt claimed victories in the T54, T37/38, T32/33/34 and T45/46/47 races.

Former Paralympic and world champion Salvador Hernandez Mondragon of Mexico won the men’s T51/52 race while Brazilian Sivaldo Santos de Douza topped the T12 podium.

Canada also collected a couple of success as Kyle Woodhouse won the T38 and Austin Smeenk came first in the men’s T33/34.

Smeenk also had success over 800m, which was other main distance run on the day.

Mark Braun of the US won the men’s 800m T54 with team-mates Branden Walton and Alex Halko coming first in the men’s T13 and women’s T34 respectively.

Japanese athletes collected wins with Hitoshi Matsunaga in men’s T52/53 and Tsubasa Kind in the women’s T54.

Mexican Yasser Guzman was first in the men’s T11/12, Canada’s Zachary Gingras was victorious in the T35-38 race and Mohamed Hersi of Denmark won the T20 event.

In the field, Rio 2016 discuss F44 champion David Blair topped the shot put with the American winning with his effort of 15.28.

World champion Lex Gillette of the US leapt 6.30m in the men’s long jump F11 to win the competition.

Action concludes in Arizona tomorrow.

A World Para Athletics Grand Prix event will also start in Beijing tomorrow at the China Administration of Sports for Persons with Disabilities’ outdoor facilities.

Competition in China will run until Monday (May 15).