Lee Westwood will play with Rory McIlroy in China on Thursday less than a week after describing the 22-year-old's move to a different management company as a "bizarre decision".
McIlroy and Westwood are competing at the Shanghai Masters, a 30-man event with a record first prize of £1.25m.
The pair were stablemates until McIlroy's decision last week to quit Andrew 'Chubby' Chandler's ISM group.
Westwood tweeted his surprised reaction to McIlroy's move to Horizon Sports.
Dublin-based Horizon already has McIlroy's Ryder Cup partner Graeme McDowell on its books.
World number two Westwood and US Open champion McIlroy will be paired with home player Zhang Lian-wei on Thursday.
The field also includes Masters champion Charl Schwartzel and PGA Championship winner Keegan Bradley.
Three-time Major winner Padraig Harrington of Ireland and South Africa's two-time Major champion Retief Goosen will also make the trip to China to play on the Jack Nicklaus-designed course.
Ian Poulter, Colin Montgomerie and KJ Choi are also in the field.