Rory McIlroy has called for tougher European Tour courses and believes they are necessary to produce better players and help improve Europe's Ryder Cup chances.
Northern Irishman McIlroy initially vented frustration on Sunday at the end of the Alfred Dunhill Links Championship in Scotland.
The 30-year-old has since said the pro-am event "wasn't the right place" to express criticism, but stands by his comments.
"I'm sick of coming back over to the European Tour and shooting 15 under par and finishing 30th," four-time major champion McIlroy said on Sunday.
"I don't think the courses are set up hard enough. There are no penalties for bad shots. It's tough when you come back when it's like that, I don't feel good golf is rewarded as well as it could be.
"I think, if the European Tour want to put forward a really good product, the golf course and the set-ups need to be tougher."
