Djokovic splits with coach Boris Becker

After partnering for three of the most successful seasons for any tennis player ever, world No. 2 Novak Djokovic and coach Boris Becker have mutually agreed to part ways.

"The goals we set when we started working together have been completely fulfilled, and I want to thank him for the cooperation, teamwork, dedication and commitment," Djokovic wrote on his Facebook page Tuesday.

"On the other hand, my professional plans are now directed primarily to maintain a good level of play, and also to make a good schedule and new goals for the next season. In this regard I will make all future decisions."

It's unclear where this leaves Marian Vajda, who was Djokovic's primary coach from 2006 until Becker came aboard in December 2013, and who's remained part of Djokovic's coaching team.

Djokovic struggled mentally and physically in the back half of 2016, after a scorching start to the season had some pondering a Calendar Slam. He traveled to the Paris Masters, the final ATP event of the year, without either Becker or Vajda. A report from The Daily Mail's Mike Dickson in October indicated that spiritual guru Pepe Imaz - who did travel with Djokovic to Paris - had grown increasingly influential in Djokovic's personal and professional life.

During his three-year partnership with Becker, Djokovic won six Slams and 14 Masters tournaments, and momentarily held all four majors at the same time after winning the French Open this past spring. That title also completed his career Grand Slam.