McIlroy joined golf's exclusive list becoming just the second man in the last half century to win all four major championships

Some of golf's biggest stars took to social media to congratulate Rory McIlroy for winning his first Masters and completing the career Grand Slam.

Rory McIlroy has endured plenty of anguishing moments while seeking to snap a decade-long drought in major championships. That made celebrating Sunday's win at the Masters with his caddie and longtime friend Harry Diamond all the more special.