Padraig Harrington faces a tough task to defend his US Senior Open title after a three-over par first round of 74.
The Dubliner played his opening round at Seniors Point in Wisconsin alongside Dungannon native Darren Clarke, who finished his round with one shot more than Harrington.
The 51-year-old defending champion hit two birdies, four bogeys and a double bogey on what he described as "one of those days".
