World No.6 Karolina Pliskova has split with her coach Jiri Vanek. The successful partnership began in 2014 and resulted in two career-best seasons for the 24-year-old Czech, who broke into the Top 10 in 2015.

Pliskova continued her rise in 2016, winning the biggest title of her career at the Western & Southern Open and advancing to her first Slam final at the US Open, where she lost in three sets to World No.1 Angelique Kerber. The announcement comes after Pliskova helped lead the Czech Republic to their fifth Fed Cup title in the last six years.

Like Pliskova, Elina Svitolina also announced her decision to split with longtime coach Iain Hughes; neither Pliskova nor Svitolina have named replacements.