Rory McIlroy and fiancee Erica Stoll sent out invitations this week for an April wedding, the Irish Daily Mail reported.
The event is expected to take place after the Masters wraps up April 9 and — the only detail the couple has confirmed — will be at Ashford Castle in Ireland's County Mayo.
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"We want to keep it to ourselves as much as we possibly can," McIlroy said earlier this year.
That might be difficult considering that some of the world's elite athletes are expected to be on the guest list.
The world No. 2's marriage to the 29-year-old native of Rochester, N.Y., will come almost three years after McIlroy, 27, called off his engagement to tennis star Caroline Wozniacki in 2014, days after they sent out their wedding invitations.
