Britain's Chris Kermode is the new head of men's tennis after being appointed executive chairman and president of the ATP.
Kermode is the man behind the Barclays ATP World Tour Finals at London's O2 Arena and the tournament director of the AEGON Championships at Queen's Club, and was the unanimous choice of the ATP board.
The 48-year-old said: "It's a huge honour to have been given the opportunity to lead the ATP during what is unquestionably one of the most exciting periods in the history of men's professional tennis.
"I look forward to getting started in my new role and to working very hard together with ATP staff, players, tournaments and partners as we look to harness the full potential of our great sport in years to come."
Kermode is hugely popular with the players and his appointment was welcomed by both Andy Murray and Roger Federer.
Wimbledon champion Murray said: "I've known and worked with Chris for many years and he gets on well with the players. He's done a great job with Queen's and the World Tour Finals and I look forward to working with him in his new role."
Federer is the president of the ATP Player Council, and he said: "On behalf of the players, I am delighted to welcome Chris as our new ATP executive chairman and president.
"Chris has a lot of experience having worked in a number of different capacities in tennis over the years and he has all the attributes required to lead the ATP World Tour forward during this period of unprecedented popularity and success."
Kermode emerged as the red-hot favourite for the post during the fifth staging of the World Tour Finals in London earlier this month.
The tournament, which features the top eight players of the season, has been a huge success, with more than 1.3million fans visiting the O2 across the five years.
The contract was extended by two years until 2015 and Kermode's appointment appears to make it more likely that London will hold on to the event for longer still.