HORSE RACING ROUNDUP: OWNER NOT MAD AT COMEBACK VICTORY.

Byline: Daily News Staff and Wire Services

Don't Get Mad and jockey Gary Stevens surged from last to first to win by seven lengths over Gallardo in the $113,100 Derby Trial on Saturday at Churchill Downs in Louisville, Ky.

The victory left owner B. Wayne Hughes of Malibu with two Kentucky Derby candidates: Don't Get Mad and Illinois Derby winner Greeley's Galaxy.

Hughes would have to pay a $200,000 supplemental nominating fee to make Greeley's Galaxy eligible for the Kentucky Derby and can put the colt in the 20-horse race next Saturday only if one of the early nominees on the current list of 21 hopefuls drops out.

If Hughes chose to keep Don't Get Mad out of the Derby field, Greeley's Galaxy would get in. Entries are due Wednesday.

``It's negative for me to think about it,'' Hughes said. ``To be here with two horses is extraordinarily positive for me and I just want to hold that thought.''

Don't Get Mad ($7), trained by Ron Ellis, a Glendale-born graduate of Monroe High in North Hills, made a strong case Saturday by rebounding from a sluggish sixth-place finish in the Santa Anita Derby.

--At Hollywood Park: King of Happiness, with Pat Valenzuela competing for the first time since an April 22 knee injury, beat late-charging Red Fort in the $107,200 Inglewood Handicap as trainer Neil Drysdale ran one-two.