Melbourne VIC, Australia, 4 March 2016 | Matt Trollope

Jack Sock had not long ago lost to Bernard Tomic in the second singles rubber of the Australia v United States Davis Cup tie at Kooyong on Friday.

After the hosts had fallen behind when John Isner beat Sam Groth earlier in the day, Tomic’s victory had levelled the tie at 1-1.

US captain Jim Courier was asked if either team had the advantage.

He paused for a moment.

“Look, Bob and Mike Bryan seem to be an advantage in the historical canon of doubles in Davis Cup,” he answered, “but every day is a different day.

“They (the Bryans) have played awfully well. We feel confident in them. But they’ve lost matches in Davis Cup too – we don’t take anything for granted and we’ll be ready to go.

“But I love having them on our side.”

The Bryans were, at the time of writing, expected to line up against the Aussie pair of Groth and Cup debutant John Peers.

Australian captain Lleyton Hewitt was posed the same question asked of Courier.

“It’s hard to say,” he responded.

“Obviously both matches today probably went to plan on rankings and on form.

“The Bryans are obviously the favourites tomorrow in the doubles but I still think our guys have got a good shot at it.

“Then on the last day, anything can happen. It’s going to be live going into the last day after today(‘s results), which is nice.”

The Australia v United States Davis Cup tie continues on Saturday at Kooyong from 12pm.

For more information, visit our dedicated Australia v United States Davis Cup page.