“You never think about giving up but you are just questioning what you are doing wrong with the horse.
“To finally get one over the line, that was great as I was pretty confident heading out there on Saturday.
“My only question was if the horse would handle the dirt and he seemed to ok. Hopefully the second one isn’t too far away.”
Stable mate Nothin' But Looks finished down the track in the gelding's race at Richmond on Saturday.
Gamboa's victory was the eleventh of Nielson's tenure as a jockey.
Coves prepares a team of three gallopers as well as working as an operations manager in North Queensland.
He is aided by riders Frank Edwards and Rebecca Wilson at the track in the morning.
“I get to spend more time with each horse and spoil them a little bit,” he said.
Respected veteran hoop Edwards was one of the first people to reach out to Coves to congratulate him on the milestone once he had completed his rides on Saturday at Atherton.