Padraig Harrington failed in his bid to qualify for next month's US Open at Chambers Bay.
Harrington closed with a bogey five on the 18th hole of his second round at the qualifying event at Walton Heath to drop just outside the qualifying mark.
"It was disappointing to bogey the last," he said. "I nearly walked off after four holes this morning so I was surprised to have a chance at all.
"It was nice to get a run going on the back nine. It's one too many, so it is disappointing, especially after making a few birdies and getting inside the mark."
The Irishman hasn't given up hope of still making the event, however.
"I believe that the top 60 after the St Jude Classic (in Memphis) still get into the US Open," he added. "So I have this week's Irish Open and the St Jude Classic. I won't play the one in between. I'm already on a run of four events.
"I have to win 25 world ranking points in that time, something like that. I certainly think a win here or at St Jude will push me across the line, or some sort of combination (of results).
"Having missed out yesterday it was very disappointing, but it will be a lot more disappointing in three weeks' time when I'm sitting on the couch watching it on TV and realising how close it was and really having done all the hard work."
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