Trainer Lars Ahlfors is confident Brohart can continue his sensational run of form by completing a hat-trick of wins at Globe Derby on Saturday.
Brohart had only completed seven victories from 61 outings but then went on to win three from his last four starts, and Ahlfors is confident that will continue this weekend.
"He's going great, but this weekend will be his biggest test," Ahlfors said. "His draw isn't great and he has higher class runners drawn inside him with claims.
"It's a pretty even field and he'll need a bit of luck from five, but he is versatile and has shown a bit of bottom.
"Ken does an excellent job and I've got the greatest confidence in him as there is a great understanding between him and the horse."
Meanwhile, Ahlfors says he does not have any set plans so will continue to select suitable races as Brohart works through the grades.
"His wins have been good up to this stage and suggest he can keep going through the grades," Ahlfors added. "It's taken a while for the penny to drop with him and he's now just starting to learn to race.
"I remember one night earlier in his career two others galloped, he didn't, but decided to stop and watch instead of racing!
"I do think he will be suited to open class as the harder they go the better he likes it.
"I couldn't be happier with his current form but can't take all the credit. My partner Vena does a lot of the background work and John Berry is great help around the place."
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