Potomac came with a strong surge to give Tyrone trainer Andy Oliver success in the mile handicap at Cork.

Chris Hayes got a good tune from his mount to grab front-runner Northern Rocked inside the final furlong.

The lightly-raced Shamardal gelding was good value for a length-and-a-half success over 2/1 favourite Bold Thady Quill who ran on late to grab second.

The 4/1 winner had run well over ten furlongs at Leopardstown last time and the drop back in trip seemed to do the trick today.

"Chris gave him a great well judged ride," said Oliver.

"He'd been off the track for a year but had a couple of nice runs before today and is progressing.

"He's a good honest horse and handles that ground. We'll see where we go now from here."

Chris Hayes added:- "He did it well. They went a nice pace the whole way and just steadied it up across the top.

"He keeps galloping and is dead genuine and honest. I knew the whole way up the straight I was going to get them. He's a nice horse and is improving.

"He's pretty versatile ground wise and had form on the all-weather. I wouldn't be afraid to run him on good ground."

Gary Carson & Alan Magee