Alexander Zverev began working with new coach David Ferrer in July.

David Ferrer owns three Normea Open titles.

Rafael Nadal beats David Ferrer in straight sets to inaugurate his Rafa Nadal Academy Kuwait.

David Ferrer and Rafael Nadal inaugurate the Rafa Nadal Academy Kuwait.

David Ferrer, middle, will become the Barcelona Tournament Director, succeeding Albert Costa, left.

Rafael Nadal and David Ferrer offer departing wisdom to the 2019 graduating class of the Rafa Nadal Academy by Movistar.

David Ferrer is celebrated for his 19-year ATP Tour career at the Mutua Madrid Open.

David Ferrer celebrates ending his career at the Mutua Madrid Open on Wednesday evening.

David Ferrer is welcomed by ATP stars past and present as he walks on court at La Caja Magica for a special ceremony honouring the Spaniard before he steps into retirement.

David Ferrer shares a moment with Roger Federer and Rafael Nadal as they attend a special ceremony in his honour ahead of the Mutua Madrid Open, the final tournament of his professional tennis career.

David Ferrer upsets Alexander Zverev to reach the third round in Miami.

David Ferrer, who is playing in Miami for the 17th and final time, requires 74 minutes to beat Sam Querrey on Thursday.

David Ferrer is going for his fifth ASB Classic title this week in Auckland.

David Ferrer claimed his fifth ATP Challenger Tour title in Manerbio, Italy, in 2002.

David Ferrer competes in the final ATP Challenger Tour event of his career, in Monterrey, Mexico.

David Ferrer claims the title at the ATP Challenger Tour event in Monterrey.

David Ferrer and Ernesto Escobedo kick off the Monterrey Challenger.

David Ferrer is heading into retirement following an illustrious career on the ATP World Tour.

Three-time champion David Ferrer owns a 26-7 record at the SkiStar Swedish Open.

David Ferrer converts each of his five break points to defeat Italy's Matteo Berrettini in straight sets at the Nature Valley International.

David Ferrer and Geneva Tournament Director Thierry Grin play mini-tennis at the Cité du Temps against Sam Querrey and tournament sponsor Eric Sturdza.

David Ferrer and Sam Querrey play mini-tennis at the Cité du Temps ahead of the Banque Eric Sturdza Geneva Open.

David Ferrer is going for his fifth ASB Classic title this week in Auckland.

David Ferrer is going for his fifth title at the ASB Classic in Auckland this week.

David Ferrer fights past Chinese teen Wu Yibing in the Auckland first round.