Former leading jump jockey Graham Lee opened his account on the Flat with victory on Northern Fling at Musselburgh.
The 2004 Grand National-winning rider switched codes last month on his return from an injury sustained in a fall over fences at Southwell in February.
He got on the scoresheet on the Jim Goldie-trained 20-1 shot in the DM Hall Handicap.
Lee took Northern Fling to the far rail to lead inside the final furlong and get home by a length from Save The Bees.
"It was nice to get that, I really enjoyed it," Lee told Racing UK.
"The race went well and I broke OK, I was parked out a little bit deep and Jim (Goldie) said he's a horse you have to humour, so I took the option of taking him back and it all worked well.
"Jim said he's a horse that you have to ask rather than tell him, so I asked - really nicely - and he said OK.
"I'm training differently but I'm eating well, obviously watching it (weight) like mad but I'm enjoying it and feeling good, which is a first in a while."
Adrian Nicholls fell foul of the stewards for careless riding on fourth-placed Cyflymder. He picked up a two-day ban (May 17 and 18) which means he will miss the last two days of the three-day York Spring Meeting.
That fate also applies to champion jockey Paul Hanagan, who was punished for careless riding when partnering 13-8 favourite Jubilee Games to victory for Richard Fahey in the Bryndley Davies Working From Home Maiden Auction Stakes.
