Montreal's Eric Lamaze finished second in 44.41 seconds with Quelmec du Gery, who he only began riding this June.
"I've never gone fast, so I wasn't sure what to expect, but it's $125,000. We're at the Masters, let's learn what he can do," Lamaze said. "I think he's going to be a very fast horse actually. He's very handy to go fast with."
Halifax's Ian Millar and Star Power were third in 44.56 seconds.
Germany won the Nations' Cup to take the prize for the second year in a row.
The German team was led by Hans Dieter Dreher riding Colore, Christian Ahlmann riding Asca Z, Daniel Deusser riding Evita van de Veldballe, and Lars Nieberg riding Leonie.
Belgium placed second while France finished third.
"It feels really good, especially since we didn't expect it," Ahlmann said. "We were really motivated, but some of us had our second horses today. We were really happy in the second round.
"Lars made it possible with his clear at the end (of the first round). Everything worked 100 per cent."
The Masters concludes on Sunday with the $1 Million CN International.