Australian Brady Fielder walked away with the top prize at the Professional Bull Riders’s first event at TD Garden in Boston on Friday and Saturday.

Fielder was nearly 100 points ahead of second-place Marco Rizzo in aggregate score over two nights of competition in the PBR’s top series, called “Unleash The Beast.” Event organizers said a sellout crowd of 12,937 attended Saturday’s final rounds.

Fielder, 26, completed all three of his rides, meaning he remained atop each of the assigned bulls for at least eight seconds and recorded a score. He was the only competitor to have a 100 percent success rate at the TD Garden event and had an aggregate score of 265.15. He earned $54,800 for the victory.

Fielder’s third ride, on a bull named “Eyes On Me,” resulted in a tour season-high single-ride score of 91.20.

Rizzo, who completed two of three rides, scored an aggregate 175.80 and the 20-year-old from Georgia remained the leader in the tour standings.

The Unleash The Beast tour continues into May, when the PBR World Finals will be held in Fort Worth, Texas. It visited Manchester, N.H., in December, to open the season, and has two other events scheduled in the northeast: New York City (Jan. 9-10) and Bridgeport, Conn. (Feb. 27-28).

Matt Pepin can be reached at matt.pepin@globe.com.

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