The pair who competed in the memorable 2012 Australian Open final have had contrasting fortunes. Djokovic's triumph in Miami breaks new ground, whilst Nadal's decline continues.
Novak Djokovic became the first player to claim Indian Wells-Miami doubles after he beat Scot Andy Murray in three sets to win the Miami Open.
The Serb, who has been in scintillating form in 2015 with wins at the Australian Open and BNP Paribas Open, holds on to his crown as undisputed king of men's tennis.
"I could not ask for a better start of the season winning three big titles," Djokovic said. "Hopefully I'm able to use this for the clay-court season coming up. That's extremely important for me."
"I feel good about myself right now on the court and just going to take it slowly, one tournament at a time."
When asked about his record-breaking form in March in the States, he acknowledged: "I do pay attention of that. Any kind of achievement that goes into history books I'm hugely proud of and I appreciate it very much, because I work hard for it and I do cherish it."
In the ATP Rankings published on Monday, Djokovic remains number one whilst Roger Federer and Murray prop up second and third respectively. But the clearest slump was of Spaniard Rafael Nadal who drops down to fifth - his lowest ranking since September 2013.
From the French Open last season, Nadal's form has been poor amid a serious of injury setbacks and health problems. The 28-year-old could resurrect his season on clay this summer at the French Open where he is notoriously strong with nine wins at Roland Garros.
The Spaniard is overtaken in fourth by Japanese player Kei Nishikori who climbs up one place with Canadian Milos Raonic in sixth and Nadal's compatriot David Ferrer seventh.
Just three Germans are in the top-100 of men's tennis: Philipp Kohlschreiber is highest-ranked at 26 ahead of Benjamin Becker (44) and Jan-Lennard Struff (75).
Meanwhile, there is no longer a German representative in the top-10 woman players as Andrea Petkovic, who reached the semifinals of the Miami Open, dropped to 11th.
Number one Serena Williams took the Miami Open title with 6-2 6-0 victory in 56 minutes over Carla Suarez Navarro. The 33-year-old has won 66 singles titles and is just one behind Billie Jean King.