World No.17 Petra Martic and coach Sandra Zaniewska will not continue their partnership into 2020, Zaniewska has confirmed to the WTA.

The pair had drawn attention over the course of a year in which Martic won her first title in Istanbul and reached her maiden Grand Slam quarterfinal at Roland Garros as one of the more unique collaborations on Tour, due in part to Zaniewska being younger than her charge.

Meanwhile, World No.26 Julia Goerges has split with both coach Sebastian Sachs and physiotherapist Florian Zitzelsperger, Tennis Magazin reported this month.

The German had collaborated with Sachs for five months, during which time she reached the Birmingham final and the fourth round of the US Open, but told the magazine: "We disagree about our future sporting direction."

For three-and-a-half years prior to working with Sachs, Goerges' coach had been Michael Geserer - who has moved on to Jennifer Brady, the American who has risen from World No.116 at the end of 2018 to hit a career high of World No.56 this month. Brady, who was a Nottingham semifinalist in June and the Indian Wells 125K runner-up in March - as well as taking Wimbledon champion Simona Halep to the brink of defeat in a 4-6, 7-5, 7-6(5) Toronto thriller in August - will be looking to continue this year's improvement with the 49-year-old German.

Another young American looking to blossom with a new coach is 18-year-old Amanda Anisimova, who returned to the Tour in Wuhan after a two-month hiatus due to the sudden death of father and coach Konstantin Anisimov. The Roland Garros semifinalist will be working with the legendary Carlos Rodriguez, famed for his work with seven-time major champion Justine Henin and two-time major champion Li Na, until Melbourne 2020.