Mark Petchey is at the top of that list. His day job with the Tennis Channel brings him to Indian Wells anyway, and he has answered the call for assistance.
He has been on court regularly this week and, even though the arrangement with Raducanu is on a day-to-day basis, it is possible that Petchey could resume the ad hoc role he had last spring.
Roig was Raducanu’s seventh permanent coach since 2021, including Petchey. Petchey, who coached Andy Murray at the start of his career, joined Raducanu’s team in Miami last March as she reached the quarter-finals.
He was also a regular presence throughout the clay-court season, when Raducanu reached the fourth round in Rome.
Raducanu said she asked for Petchey’s help as she felt uncomfortable about her game, and has noticed an improvement over the past few days.
“I work really well when I’m with him,” she said.
“I’m really happy to be on the court and just really enjoy it overall. I’m not sure, going forward, what it will look like.”
