The four-time Group One-winning colt was trained by Aidan O'Brien and was ridden by Johnny Murtagh in all of his wins.
He was beaten into fourth place by the Freddy Head trained Naaqoos in the Prix Jean-Luc Lagardère at Maisons-Laffitte in France.
Nevertheless, wins in three important conditions races earned Mastercraftsman 2008 European Champion Two-Year-Old Colt honors.
The race was won by Sea the Stars with Mastercraftsman finishing in 5th place and behind Aidan O'Brien's other runner Rip Van Winkle.
Success came in the Irish version of the classic with Mastercraftsman starting favourite and going on to win by 4 and a half lengths.