Emma Raducanu ends the current season and plans to retain her coach through next year.
The British player reached the third round in three out of four major tournaments in the current campaign.
Emma Raducanu from Great Britain has pulled out of her final two events of the year due to a health issue she has been battling in recent days.
The 22-year-old was scheduled to compete in Tokyo and Hong Kong but opted to return home to regain her health before starting her preparations for 2026.
Those preparations will include her coach Francisco Roig, as the pair have agreed to work together in 2026.
Raducanu underwent blood pressure monitoring while playing the initial match versus Ann Li in Wuhan and retired when trailing 6-1 4-1 on a very muggy occasion.
She again required a visit from the doctor at this week's Ningbo Open, where she lost in three sets to local wildcard Zhu Lin in the first round.
She was also playing far from freely in the third set versus Zhu due to a lower back issue that has affected her at times this year.
These outcomes signaled a promising season, in which she climbed into the world's top 30 after a long gap since her previous ranking, concluded with three straight losses.
She held three match points before losing to Jessica Pegula in round three in Beijing last month.
The player achieved 28 victories during 2025 and advanced to the semis in Washington, but the highlight of her season was at the Miami Open in March.
As Britain's top player made the last eight of this WTA 1000 tournament, defeating eighth seed Emma Navarro en route before losing in three sets to Pegula, ranked fourth.
She worked with Mark Petchey as coach from Miami until Wimbledon, with Francisco Roig stepping in in time for the US Open.
The first plan with the ex-coach of Rafael Nadal was through the season's conclusion but the collaboration persists, with a training session scheduled late this year.
The athlete revealed that her three-day trial with Roig post-Wimbledon was like a "black ops mission" as they aimed to maintain secrecy.
She came very close to overcoming Sabalenka, the world number one at their first tournament together in Cincinnati during August.
The coach also accompanied Raducanu in New York, where she made the third stage then falling to Rybakina, champion at Wimbledon in 2022.