After departing with Jamie Delgado at the end of last year, Andy Murray opted to trial Jan De Witt as his coach for December and January.
De Witt, who previously coached Gilles Simon and Gael Monfils, first worked with the former No.1 in Abu Dhabi, where Murray competed in an exhibition event.
The duo then travelled to Australia, where it began to look as though Murray was making serious progress.
The 34-year-old reached the final of the Sydney Classic, but lost out to Aslan Karatsev.
That left fans hopeful of Murray piecing together a run in January's Australian Open, and a first round win against 21st-seeded Nikoloz Basilashvili added to that optimism.
But in the following round, when Murray faced Japan's Taro Daniel, the Scot suffered a disappointing defeat in straight sets.
As a result, Murray has chosen not to continue with De Witt as his coach, meaning he is still searching for a mentor ahead of the Rotterdam Open next week.
Murray also previously trialled Johanna Konta's former coach Esteban Carril in November, but again decided against partnering with him in the long-term.
Back in December, Murray claimed he wouldn't rush the decision to replace former coach Delgado, and it seems he's staying true to his word.
"The decision is an important one for me," Murray said.
"Obviously I don't know how much longer I'm going to be playing so I want to make sure that the person that's with me for the last period of my career is the right one."