John Isner has one of the most powerful serves in the game of tennis. Part of the reason is that he is 6 ft 10 inches and is one of the tallest players on the tour. Until 14, Isner played basketball before switching to tennis in a serious way.
Isner played college tennis at the University of Georgia (2004-07). He reached the NCAA singles final and won doubles & team titles in 2007. He only started playing on ATP tour after college.
Italian apparel and shoe maker Fila signed John Isner for a 3-year deal in 2016, and then extended the deal in 2019. In addition to wearing Fila apparel, Isner wears the Fila Axilus Energized 2 shoes on the court. In addition to sponsoring a number of tournaments, Fila also supports Tennis Canada, Argentine Tennis Association, Kim Clijsters Academy and John Newcombe Tennis Ranch. After graduating from college, Isner was with Nike, and later with Lacoste for 4 years.
Isner is one of the few players on tour using the Prince racquet. His racquet is the Prince Textreme Warrior 100.
TAMKO Building Products is one of the America’s largest manufacturers of residential and commercial roofing products. John Isner’s father was a building contractor in North Carolina and was a frequent customer of Tamko. In addition, Tamko’s CEO David Humphreys is an avid supporter of tennis. Supporting Isner, who has been a top American tennis player for more than a decade comes as no surprise.
John Isner signed tennis’ first CBD sponsorship with Defy. Defy makes performance drink infused with high quality hemp extract.
Bass Pro Shops
Isner is an avid hunter and loves fishing. He is also married to a girl from Texas and lives in Dallas. It’s no wonder that he has a deal with Bass Pro.
Ebix provides on-demand software and e-commerce services to the insurance, financial and healthcare industries. Isner wears the Ebix patch on his left shoulder. Fila allows its players to wear additional patches. Nike is strict in that regard, though it has made exception in recent years.
Nulo is a privately-owned pet food company creating industry-leading pet nutrition for cats and dogs. In addition to Isner, the company is endorsed by Michael Phelps and Katie Lee.
Inser doesn’t just endorse Runa. He is also an investor in the company. The company makes the popular organic guayusa tea.