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American Jack Sock poised to make tennis history (updated)

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Pospisil and Sock remain undefeated as a team after winning in Cincinnati Wednesday (Getty Images)

Jack Sock and Canadian partner Vasek Pospisil  had a dream debut as a doubles duo when they won the Wimbledon crown in their first tournament together last month.

Friday in Cincinnati, they're posed to break a record that has stood for at least 30 years.

If Pospisil and Sock defeat No. 2 seeds Alexander Peya of Austria and Bruno Soares of Brazil in the Cincinnati quarter-finals, it will be their 13th consecutive victory. According to the ATP, that would surpass a 12-match debut run by the team of Paul Annacone of the U.S. and Christo van Rensburg of South Africa, who kicked off their partnership by winning 12 straight matches.

The ATP Tour records go back 30 years; no team has done better.

(UPDATE: Sock and Pospisil squeaked through, 6-2, 5-7, [10-7] to reach the semi-finals)

Annacone and van Rensburg won the Sydney tournament on grass in December 1984 (yes, they had tournaments in December back then; the Australian Open was played in November), then the 1985 Lipton championship in Delray Beach (which is now the Sony Open in Miami). They lost in the quarter-finals of an ATP event in Houston.

Between Sydney and Delray, both played tournaments with other partners before teaming up successfully and exclusively for many years. Annacone was just 21 at the time – as his countryman Sock is now – and only turned pro in 1984. Van Rensburg was 22 and a second-year pro.

Thirty years later, Pospisil and Sock won six matches to take the title in London and four more to win the tournament in Atlanta three weeks ago. This will be their third match in Cincinnati and, as fate would have it, the third match in which they will face a team they defeated on the road to that inaugural Wimbledon crown.

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There was a lot of man-hugging going on after Vasek Pospsil and Jack Sock won their Wimbledon men's doubles semi-final …

Here was their draw at the All-England Club:

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Wimbledon 2014

In Cincinnati, they defeated Rohanna Bopanna and Qureshi 7-5, 6-2 in the first round and No. 5 seeds Paes and Stepanek 6-1, 4-6, [10-8] in the second round.

Peya and Soares are the No. 2 seeds, as they were at Wimbledon.

How did Annacone and van Rensburg work out? Well, they won eight tournaments together, including the 1985 Australian Open final on grass, and made eight more finals.

Annacone, a pure serve-and-volleyer and chip-and-charger in the best old-school tradition, reached No. 12 in singles and No. 3 in doubles during his career. After his playing days, he became a respected coach whose pupils so far have included Pete Sampras, Roger Federer and, more recently, Sloane Stephens.

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Annacone dispenses advice to Roger Federer at the Rogers Cup in Canada. (Stephanie Myles/opencourt.ca)

Van Rensburg reached No. 19 in singles and No. 5 in doubles, with two singles and 20 doubles titles to his credit.

Pospisil and Sock no doubt would be quite happy with those careers.

In a full-circle sort of thing, van Rensburg and partner David Wheaton handed American doubles legends Bob and Mike Bryan their first career defeat on the ATP Tour, 6-4, 6-7, 7-6 in the second round of a tournament in Atlanta ... in 1996.

Van Rensburg was an "old man" of 33 then; the Bryans had turned 18 that very week and were ranked 1,210 in the world.

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Van Rensburg flanked by the Bryans las April. He and David Wheaton handed them their first loss on the ATP Tour. …

The Bryans, who were in college and only turned pro in 1998, began their careers on the circuit with a 3-14 record before going down to the Futures/Challengers level for a few tournaments to retool.

Eighteen years later, at 36, they remain the undisputed No. 1 team in the game and are closing in on 100 career doubles titles

They could be Pospisil and Sock's opponents in the Cincinnati final, if both teams make it. Just as they were in the Wimbledon final.

(Tip of the Busted Racquet beret to Open Court Twitter follower Paul Fairie of Calgary, who asked the question).

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