Kenyan Nicholas Kipkoech, who holds 1:43.37 and 2:16.68 credentials over 800m and 1000m from last year, and Ryan Gregson, this year's Australian 1500m champion, should prove Rudisha's primary challengers.

"I like the competition. This is what makes you get a better judgement of where you are before a major championship. It awakens the monster in you and that desire to do better by polishing your skills," he said.

Alongside Rudisha, Kenyans will be out to see how fast Britain's Mo Farah will run in his 10,000m race.

Conversely, the double-double world and Olympic champion will be covering familiar territory. In Ostrava, the Briton will embark on what will likely be the final 10,000m race of his career at a one-day meeting.

Farah, 34, clocked a world-leading 13:00.70 in the 5000m in Eugene one month ago, illustrating solid form in the run-up to his bid to defend his back-to-back world titles.

But unlike Rudisha, a meeting record is probably out of reach for the European record-holder. That belongs to Kenenisa Bekele, who set a 26:20.31 world record in 2004.

In the steeplechase, the attention will fall on Conseslus Kipruto, who took last year's Olympic title four months before his 22nd birthday.

He is expecting to target his own world lead of 8:04.63 from Rome's Golden Gala set nearly three weeks ago.

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