Derby day has arrived and it’s raining. There have been showers overnight and it is now forecast to develop into a persistant light rain throughout the afternoon which means that come 17:05 the track may have quite a bit of water in it. The morning tipsheets are mostly backing Rainmaker to take the Derby with some support for two of the other Busan horses Gaesan Janggun and Jeolho Chance. There’s some place support for Magic Victor and Mighty Galloper.