By Chris Oddo | Friday, February 27, 2015

Though it has been overshadowed historically by Federer-Nadal, and of late by Nadal-Djokovic, Roger Federer and Novak Djokovic have had no shortage of classic moments during their storied rivalry. In honor of their 37th meeting at the Dubai Duty Free Tennis Championships on Sunday, we'll add up some of the numbers that have made this rivalry special.

37
Number of times Djokovic and Federer have locked horns, which moves them past past Federer and Nadal (33), Connors and McEnroe (34), Connors-Lendl / Becker-Edberg (35) and Lendl-McEnroe (36) for second-most head-to-head meetings by two players.

Here are the top seven:

1. Djokovic-Nadal, 42
2. Federer-Djokovic, 37
3. Lendl-McEnroe, 36
4. Connors-Lendl, 35
4. Becker-Edberg, 35
5. Connors-McEnroe, 34
5. Agassi-Sampras, 34
6. Federer-Nadal, 33

19-17
Federer owns the edge in the head-to-head by two matches. Federer took three of five in 2014, with Djokovic winning the memorable Wimbledon final in five sets in early July. The Swiss won for the first time when dropping the first set against Djokovic in Dubai last winter, and after dropping the Indian Wells final in a third-set tiebreaker, he defeated Djokovic in the Monte-Carlo semis while the Serb was struggling with his right wrist. In October, Federer took the edge in the 2014 head-to-head with a 6-4, 6-4 win in the Shanghai semis.

25
Grand Slam titles between the two. Federer comes in with a pretty hefty edge of 17-8. Go ahead and relive some of the glory of their 2014 Wimbledon final, you know you want to:

6-4
Djokovic owns the slight edge in career finals against the Swiss maestro, due to the fact that he has won their last three finals (Indian Wells, ’14, Wimbledon, '14, World Tour Finals, ’12)

132
Career ATP titles between the two. Federer, five years Djokovic's senior, has the edge of 83 to 49. .

10
Number of total Dubai titles between the two. Federer owns six titles while Djokovic owns 4. The pair have combined to win 10 of the last 12 Dubai finals. Federer has won two of three matches against Djokovic in Dubai, but Djokovic took their only previous final in 2011.

80-9
Federer and Djokovic's combined record in Dubai over the years.

147-113
Djokovic and Federer's combined lifetime record against the ATP's top five. Djokovic (60-52) has won five of his last six against the top five while Federer (87-61 ) has won four of his last five. Each player's last top five loss came against the other. 

11-5
Djokovic's record against Federer in deciding sets, including victories in six of the last seven deciders.

28-8
Record of player who wins the first set when Federer and Djokovic play. Federer is only 18-7 when taking the first set against Djokovic, far from a lock. Djokovic is 10-1 when he takes the opener.

67
The lowest ranking that either player has taken into a meeting with the other. Djokovic was a qualifier ranked 67 in the world when he faced Federer in the first round at Monte Carlo in 2006. Federer was ranked eighth when he faced Djokovic in Dubai last year, which is the lowest ranking he's ever held when facing the Serb. In 18 of their previous 36 meetings, one or the other held the No. 1 ranking (Federer 12 times, Djokovic 6).

Federer comes in ranked No. 2, while Djokovic is ranked No. 1.

18
Number of tiebreakers the pair have played, with each player winning nine. The pair split two tiebreakers at the Wimbledon final, with Federer winning the first set breaker and Djokovic taking the third.
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8,995
Number of career aces that Federer has hit as of tomorrow's final. He's five aces away from joining Goran Ivanisevic (10.183), Ivo Karlovic (9,375) and Andy Roddick (9,074) as one of the only four members in the ATP's 9,000-ace club.