Andy Murray has announced that he has signed a four-year sponsorship deal with American sportswear giant Under Armour.
Currently ranked number six in the world, the former Wimbledon champion has completed a deal for the Baltimore-based sportswear brand to replace his £15m five-year deal with Adidas as his principal kit sponsor.
The US firm already sponsors Premier League club Tottenham, with Murray's deal further expanding tennis interests.
"I am very honoured and excited to be joining Team Under Armour and to help them tell their story globally," Murray said.
"They are committed to providing innovative apparel, accessories, and footwear, with an unmatched focus on training and performance."
Ryan Kuehl, Under Armour's senior category director, Global Golf and Tennis, said: "Signing Andy is really a special moment for the brand, as we continue to elevate and diversify our athlete roster and expand our international presence.
"Andy's remarkable character, competitive spirit and unmatched ability make him the perfect fit for our family."
Murray's manager Matt Gentry added: "Andy is very committed and focused when it comes to training and preparation, so the new partnership is an exciting and ideal match.
"Athlete performance and product innovation are the brand's core pillars, which will have strong benefits for Andy and the team in 2015 and beyond," he added.
Other athletes who are contracted to Under Armour include NFL star Tom Brady, golfer Jordan Speith and skier Lindsey Vonn.