Battle Of Marengo was left generally unchanged by bookmakers for Classic glory after a workmanlike success in the Derrinstown Stud Derby Trial at Leopardstown.

Giving Aidan O'Brien his fourth Derby trial winner of the week, the Galileo colt - sent off at prohibitive odds of 2-13 - took over from Dont Bother Me around five furlongs out and it looked like he would win with real ease when going clear with quarter of a mile to run.

He had to get a reminder from Joseph O'Brien, however, and in the end was pushed out to beat Loch Garman with Little White Cloud running an eyecatching race in third.