Kevin Corstens

Trainer Kevin Corstens (Image: Racing Photos)

First Flemington winner for Corstens

Kevin Corstens trained his first Flemington winner as Twilight Run crushed his opposition - which included the heavily spruiked favourite Killavally - in the $135,000 Murray Cox Handicap (1600m).

Beau Mertens settled Twilight Run ($7) in 10th position before allowing the three-year-old son of Akeed Mofeed to rush down the outside of his rivals and score by 1.25 lengths.

WATCH: Twilight Run's win

Corstens, who is the brother of fellow trainer Troy, said he arrived at Flemington confident after Twilight Run's excellent first-up placing behind Smart Elissim.

"Since his Tasmanian Derby run at the end of last prep he's improved," Corstens said.

"I always thought that he had a bit of ability but it was a good win today."

WATCH: Hear from Corstens

Magnossiva ($101) and Phaistos ($3.60) filled the minor placings while Killavally ($2.80 favourite) finished 12th in the 16-horse field.

Craig Williams told stewards upon returning to scale that Killavally raced keenly and was knocked off balance on the home turn.