John Isner with Magill

Professional Tennis Player

At a towering height of 6’10” and wingspan that seems to stretch the entire width of a tennis court, it’s hard to miss John Isner. But it’s his English Cocker Spaniel, Magill, that steals the spotlight on the court and he isn’t afraid to face his dad’s 150mph serve!

With access to an unlimited supply of tennis balls, Magill (named after the Georgia Bulldog Coaching Legend, Dan Magill) is living the dream and thinks he has the best dad that a dog could hope for.

Highly touted as having the most powerful serve on the ATP World Tour, John turned pro in 2007 and achieved his career-high singles ranking of world No. 9 in 2012. At the 2010 Wimbledon Championships, he played the longest professional tennis match in history, defeating Nicolas Mahut after 11 hours and 5 minutes over the course of three days! Yes… an 11 hour tennis match!

John credits his elite nutrition for allowing him to focus on a ball for hours on end, and knows that Magill needs the same level of superior nutrition to stay energized throughout each day and fetching balls for years to come.

John and Magill embody Nulo’s mission – the passion to inspire others to live active, healthy lives – and provide pets the same opportunity. That’s why John has teamed up with Nulo for an exclusive Aces for Animals campaign. In 2016, Nulo will donate 10 meals of pet food to a local animal shelter for every ace that John serves at select ATP World Tour events.


John Isner’s Tennis Accompishments

Statistics Career Record: 335-210
Career Titles: 10
Highest Ranking: No. 9 (April, 2012)
Current Ranking: No. 21 (June, 2017)

Grand Slam Singles ResultsAustralian Open 4R (2010, 2016)
French Open 4R (2014)
Wimbledon 3R (2014, 2015)
US Open QF (2011)

Olympic GamesQF (2012)
RecordsLongest match in history at 11 hours and 5 minutes
113 aces in an ATP singles match
113 aces in a Grand Slam singles match
85 aces in a single set
92 games won in a single match
91 games lost in a single match that he won
246 winners in a single match