Shalaa bounded away from his rivals in the closing stages to easily land the Arqana July Stakes at Newmarket.
The Invincible Spirit colt travelled well throughout for Rab Havlin before being asked to go and win the race.
Shalaa (14-1) produced a decisive turn of foot to go on and score by a length from Steady Pace, despite drifting over to the far rail. Elronaq was two lengths away third.
The victory gave John Gosden a quick double after the success of Mr Singh in the Bahrain Trophy.
Shalaa had gone into the race as second string for owners Al Shaqab Racing, with Frankie Dettori choosing Eltezam, who faded in the final furlong after being prominent.
Havlin said: "Before he ran this year we thought he could be a Coventry horse. He just needed a couple of days away from the yard to learn how to do everything right.
"He put it all together today and did it well.
"He travelled with a lot of ease through the race and it was just a matter of pressing the button. When he stopped quickening he started idling, so there was a bit left in the tank."
Gosden said: "He's a horse that just needs to settle a bit and I'd love to see him relax a bit more.
"Frankie rode him the other day and said he had to ride the horse that was third in the Coventry (Eltezam). Rab knows this horse well at home and they had confidence in each other, which is very important.
"We did plan to have him as a Coventry horse, but he was still a little bit nervous.
"When we ran him first time at Newbury he got stage fright, so we brought him here and schooled him and gave him a stalls test which he passed.
"He's a talented horse and has always been our fastest two-year-old this year. The plan now is to go for the Richmond Stakes at Goodwood."
Betfred gave Shalaa an introductory quote of 25-1 for next year's 2000 Guineas.
Saeed bin Suroor said of Steady Pace, who had been third in the Windsor Castle Stakes at Royal Ascot: "He ran very well, I'm pleased with that run. We have the option of going up to seven furlongs with him, possibly at the Glorious Goodwood meeting, but he's a nice horse and he should progress again next season."
