Zaaki will look to make his second appearance of the season for Sir Michael Stoute in the Investec Diomed Stakes, a Group Three contest over the extended mile.
The four-year-old returned at Ascot on May 1 to compete in the Paradise Stakes over the same distance in Listed company, and got the better of former fan favourite Barney Roy, who was making his first start since failing at stud duties.
The former St James's Palace winner has since won subsequently very handsomely at Longchamp, boosting the Ascot form in the process.
More will be expected of Zaaki - who despite winning, was very slow at the stalls last time out and held up in last position.
Will be a strong fancy this time, in the hands of Ryan Moore.