PETRA COLUMBA (2) was 14 lengths from the winner in sixth over 905m at this track (Dirt) last time following a minor placing on debut the run before. Backmarker who gets home hard. Well placed and happy to have her on top. GLORIFY IT (5) has started twice, running a good third on debut then finishing fourth, beaten 4.5 lengths, last time over 1308m at this track (Dirt). Has the pace to take a forward position. Well placed and worth another chance. SIERRA (3) is a three-year-old filly who is having her first run for the Kevin J Joy stable. Finished off last campaign with a fifth at Colonial Downs Inner Turf (Turf) 13 months ago. Not seen at the trials but is in a nice race. Leading prospect. LAURA'S THUNDER (4) resumes from a spell of 20 months and is having her first outing under new trainer Ronney W Brown. Finished fourth at Timonium (Dirt) over 805m at the opening run last time in work.