NEW YORK (AP) — They’re at the top of their sport. They’re primed to run down tennis balls. So perhaps it’s perfectly natural that about 3,000 top-flight canines are converging on the grounds of the U.S. Open tennis tournament, where the Westminster Kennel Club dog show began Saturday.

It’s a new venue for the nearly 150-year-old event, now back in New York City after a two-year, pandemic-induced sojourn in the suburbs.

As the show began Saturday with an agility competition and other events, there were a few double-takes, if not double-faults.

Barks, not the pock of tennis balls, were heard across the sunny, 40-acre (16-hectare) grounds of the USTA Billie Jean King National Tennis Center. Westminster’s traditional green carpet had been rolled out in Arthur Ashe Stadium for fleet-footed — but four-footed — competitors.

The fan-friendly South Plaza was set up with a 27,000-gallon (102,200-liter) pool for a canine dock=diving demonstration. Turn in any direction, and a dog of some sort was likely to be passing by.