ATP World Tour Finals Preview: The Ivan Lendl group

In London, the Ivan Lendl group will pit Novak Djokovic, Dominic Thiem, Milos Raonic and Gael Monfils against each other in a battle for semifinal spots. Here's a brief lowdown of each contestant.

Age: 29

Ranking: No. 2

Win/loss record vs. each player in the group:

7-0 vs. Raonic

13-0 vs. Monfils

3-0 vs. Thiem

Best moment of 2016: The Serb won the sole Grand Slam he was missing at Roland Garros by topping Andy Murray in the final.

Worst moment of 2016: He was stunned in the third-round of Wimbledon by Sam Querrey, ending his bid for a calendar-year Grand Slam and dampening the latter part of his season.

Age: 25

Ranking: No. 4

Win/loss record vs. each player in the group:

0-7 vs. Djokovic

2-3 vs. Monfils

1-0 vs. Thiem

Best moment of 2016: The Canadian reached his first major final at Wimbledon by upsetting Roger Federer in an epic five-setter.

Worst moment of 2016: Dealing with injury, Raonic was upset in the second round of the US Open by a No. 120-ranked Ryan Harrison.

Age: 30

Ranking: No. 6

Win/loss record vs. each player in the group:

0-13 vs. Djokovic

3-2 vs. Raonic

0-1 vs. Thiem

Best moment of 2016: Enjoying his best career year so far, the Frenchman won his sixth title in Washington before reaching the semifinals at the US Open.

Worst moment of 2016: In a year full of deep runs, Monfils suffered a shocking first-round loss to compatriot Jeremy Chardy at Wimbledon.

Age: 23

Ranking: No. 9

Win/loss record vs. each player in the group:

0-3 vs. Djokovic

0-1 vs. Raonic

1-0 vs. Monfils

Best moment of 2016: The Austrian broke through at a major by reaching the semifinals of Roland Garros right after capturing his fourth title of the season in Stuttgart.

Worst moment of 2016: Thiem has gone 1-3 in the last three events he’s played, culminating in a 6-2, 6-4 loss to Jack Sock in his Paris opening round.

Check out the John McEnroe group next.