mcilroy 's fourth place in the masters is his best finish in seven appearances , while his 12 under par total was 12 shots better than last year and beat his previous best by eight shots .
but the world number one never threatened to claim a first green jacket to become only the sixth player in history to win all four major titles and saw spieth follow up his second place at augusta on friday .
jordan spieth wears his green jacket after a sensational victory at the masters on sunday .