A pair of Canadians rounded out the podium as the Irishman takes the class aboard Ariel Grange's stallion in Thursday's 5* feature at tbird.
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In just under 100 days this important Olympic qualifier will take place at the Ippodromo Snai San Siro racecourse.
A hot battle ensued between three central European nations as opportunities narrow for those seeking Olympic team qualification.
Four strong performances over the Ian Stark-designed cross-country course gave the French team the edge over Great Britain.
Five days of jumping, dressage, and driving competition drew to a close on Sunday with a win for Martin Fuchs in the Rolex Grand Prix.
The 2nd of three Nations Cups to be held in North America took place in San Juan Capistrano and was won by Team USA, who lead the standings.
Sheffield and Wonky earned their best freestyle score to date; next stop for the pair is the Ottawa CPEDI3* for the team event.
Some confusion has resulted from the recent announcement regarding USEF membership and foreign riders; US Equestrian responds.
In that nation's first outing of the 2023 FEI Dressage Nations Cup season, they edged the Netherlands and Germany with strong scores.