Laver Cup: 5 most successful players in the competition's history

#4 John Isner (Team World)

John Isner

One of five players to have played in each of the three editions of the Laver Cup (2017-2019), John Isner, in his competition debut in Prague 2017 conceded a titanic first set 15-17 on a tiebreaker to Dominic Thiem and ended up losing the match in a match tiebreak.

On the third day of action in Prague, Isner teamed up with compatriot Jack Sock to beat the Team Europe combine of Tomáš Berdych and Marin Cilic in two tiebreak sets to reduce Team World's deficit to 6-9. After Sascha Zverev had beaten Sam Querrey in the second match of the day, Isner ensured the tie went the distance by notching up his first-ever win over Rafael Nadal.

In his second appearance at the Laver Cup in 2018, Isner suffered his second singles defeat in the competition in three matches when he went down to Sascha Zverev in a match tiebreak.

On the final day of play in Chicago, Isner and Sock saved two match points to beat Roger Federer and Sascha Zverev, as Team World took the lead (8-7) for the first time in Laver Cup history. The big American, though, failed to build on his team's momentum as he went down to Federer in a 7-6(5) 6-7(6) [7-10] thriller.

Isner and Sock rejoice after beating Federer and Tsitsipas at the 2019 Laver Cup in Geneva

Isner opened his third campaign at the Laver Cup in Geneva by beating Zverev in a match tiebreak to improve his singles record at the competition to 2-3. The Isner-Sock duo was at it again as they beat Federer and Stefanos Tsitsipas in a match tiebreak on the final day to put Team World into an 8-7 lead. Following Taylor Fritz's upset of Dominic Thiem, Team World had two bites of the cherry to seal their first title.

Isner, though, fell to Federer 4-6 6-7(3) for his fourth defeat in six singles matches at the Laver Cup. With the defeat, Isner's Laver Cup match win record (singles and doubles) stands at 5-4.