Alexander Zverev is working with a Grand Slam champion as he seeks stability for his game.
The Olympic gold-medal champion is working with Spanish Davis Cup captain Sergi Bruguera as coach on a trial basis.
More: Swiatek Shed Tears of Sadness over Barty Retirement
Former world No. 3 Bruguera has previously coached Richard Gasquet and Jo-Wilfried Tsonga. Bruguera won back-to-back Roland Garros championships in 1993-1994.
It's the third time Zverev, who has been primarily coached by father Alexander Zverev, Sr., has worked with a Spanish coach following stints with Juan Carlos Ferrero and David Ferrer.
Photo credit: Julian Finney/Getty