Richard Hannon claimed his seventh win in the last 11 runnings of the bet365 Mile as the talented Trumpet Major made a successful return to action at Sandown.
Fourth in last year's 2000 Guineas, the four-year-old was available at 3-1 for his comeback run.
Highland Knight turned in a bold show from the front, but Richard Hughes always appeared confident aboard Trumpet Major and he eventually reeled in the leader to take the Group Two prize by a length and a quarter.
Farraaj, the 9-4 favourite, failed to make his presence felt.
Hughes said: "He did it well. We were worried when it rained as a lot of his runs on soft (ground) aren't good. We were concerned, to say the least.
"He won the Craven by five lengths and was fourth in the Guineas when I made the running on him, so it was no mean feat.
"This could be his year."
Sugar Boy bravely repelled the challenges of Eye Of The Storm and Galileo Rock in an Irish-dominated finish to the bet365 Classic Trial.
The Patrick Prendergast-trained struck three times during a successful juvenile campaign and chased home Aidan O'Brien's Battle Of Marengo on his three-year-old debut in the Ballysax Stakes at Leopardstown.
With O'Brien's Eye Of The Storm the 2-1 favourite for this Group Three test, Sugar Boy (4-1) was soon making the running in the hands of Chris Hayes.
Eye Of The Storm drew alongside at the top of the straight and briefly went to the front under Ryan Moore, but Sugar Boy battled back tenaciously and was a head to the good passing the post.
David Wachman's Galileo Rock was under pressure far earlier than the front pair, but there was much to like about the way he came home to finish a clear third.
Hayes said: "He's a good galloper and Patrick filled me with confidence going out.
"I just said to Patrick that if we'd got beat it would have been my fault because I possibly didn't make enough use of him.
"It was my first time riding at the track and I thought I'd gone quick enough in the ground.
"But looking at how he finished I could have gone a bit quicker."