British swimmers made eight Championship finals at the Arena Grand Prix in Charlotte, USA, with Charlie Boldison and Jessica Lloyd posting personal bests.
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Lewis Coleman was the highest placed Brit during the Meet, which took place from 15-18 May.
The City of Sheffield athlete finished the 200m Breaststroke in 2:15.45 to give him fourth place. He also posted a 2:03.02 in the 200m Backstroke to win the Consolation final and a 1:51.11 in the 200m Freestyle to finish eleventh.
University of Stirling’s Boldison twice swam a 50m Backstroke PB of 25.96 to finish third in the prelims and sixth overall.
The British champion also added two fifth place finishes in the 100m and 200m Backstroke with times of 55.24 and 2:00.55 respectively. Jonathan Carlisle (National Centre Bath) took over three seconds off his preliminary time to win the 200m Backstroke Consolation final in 2:01.76 and finish ninth overall.
In the 50m Breaststroke Chris Steeples (City of Manchester) finished in 29.07 to take sixth, and won the 100m Breaststroke Consolation final in 1:03.68 to finish ninth.
In the 100m Freestyle Jessica Lloyd finished fifth in 55.94, 0.6 seconds ahead of City of Manchester team mate Rebecca Guy who was joint seventh with 56.54.
Guy also finished seventh in the 50m Freestyle with 26.03, while Lloyd set a 27.61 PB in the 50m Butterfly.