Rory McIlroy doubles fortunes for Irish managers Horizon, which also manages McIlroy's fellow Ulsterman Graeme McDowell, saw profits after distributions to stockholders surge 135pc from €116,720 (£96,162) to €275,217 in the year to December 2011, according to the Irish Times. The paper also reported Horizon's cash pile grew to €248,364 from €133,007 in 2011, and shareholder funds totalled €315,464. But for the small management firm, established in 2005 by entrepreneur Conor Ridge, the best is yet to come. The 23-year-old is expected to be unveiled as Nike's face of golf in Abu Dhabi on Monday, in a 10-year deal believed to be worth £156m - the single most lucrative endorsement ever negotiated in golf. Meanwhile he is still proving profitable for his former managers, who negotiated sponsorship deals running until 2015, including his £1m-a-year tie up with Spanish bank Santander. McIlroy has attracted high-profile sponsors since he was a teenager, including Jumerirah, Oakley and Titleist. The golfer has made headlines this week for suggesting he will skip the Rio Olympics to avoid creating conflict over whether to represent Great Britain or Ireland.