Stewards accept Chris Waller's explanation LEADING Sydney trainer Chris Waller has escaped sanciton for bringing four horses to the races with Ibuprofen in their systems. However Racing NSW stewards have taken no action against Waller for the incidents which occurred in February and last month. A Racing NSW inquiry found Waller had no case to answer after stewards agreed he took every possible measure to ensure feed consumed by his horses contained no prohibited substances. Feed contamination was found to be the reason for the series of positive samples to the anti-inflammatory. Arinosa has been stripped of her first-up success in the Listed Wenona Girl Quality at Warwick Farm on March 16. The five-year-old has since won the Group III Birthday Card Stakes and the Group II Sapphire Stakes and been cleared. Jade Marauder tested positive to Ibuprofen on March 16 at Warwick Farm, having done so a month earlier at Rosehill. Seuss was the first to raise concerns, the sample taken at Gosford on February 14. All four horses were disqualified. Stewards took samples of the feed, including unopened packages, used at Waller's stables last month. In all, 11 containers sent to the Australian Racing Forensic Laboratory for analysis. Waller has trained four Group I winners over the Sydney autumn carnival and is poised for more success at Randwick tomorrow when he saddles up Sydney Cup favourite Kelinni.