Emma Raducanu ends this year's campaign and has decided to continue with trainer through next year.
The British player reached the third round in three of the four Grand Slams this year.
Emma Raducanu from Great Britain will not compete in her remaining competitions of the year as a result of a health issue she has been fighting over the past 10 days.
At 22 years old was due to play in events in Asia but opted to return home to rest and recuperate ahead of launching her preparations for 2026.
Her upcoming training are set to feature coach Francisco Roig, as both individuals have agreed to work together in 2026.
She required blood pressure checks in her opening round versus Ann Li in Wuhan last week and retired when trailing 6-1 4-1 on a very muggy occasion.
Another medical visit was necessary medical attention at the recent Ningbo Open, where she was defeated in three sets to Zhu Lin, a Chinese wildcard in round one.
Her movement was noticeably restricted in the third set against Zhu owing to back discomfort that has been a concern at times this year.
Those results meant an encouraging season, in which she climbed into the international top 30 for the first time since her previous ranking, concluded with three straight losses.
She held three match points before losing to Pegula in the third round in last month's Beijing event.
She secured twenty-eight matches this year and advanced to the semis in the Washington tournament, but her most impressive week was at the Miami event in March.
The British number one made the last eight of a premier WTA event, beating eighth seed Emma Navarro on the way prior to a loss in three sets to fourth-ranked Pegula.
She worked with Mark Petchey from Miami until Wimbledon, with Roig taking over ahead of the US Open.
The initial agreement with the former trainer of Nadal was for the remainder of the year but the partnership will continue, with a training session scheduled in the coming months.
She mentioned that her three-day trial with Roig post-Wimbledon was like a "secret mission" as the meeting was kept under wraps.
She nearly succeeded to overcoming Sabalenka, the world number one at the first competition with Roig in August's Cincinnati tournament.
Roig joined her in the New York tournament, where she reached the third round prior to losing to 2022 Wimbledon champion Elena Rybakina.