Ireland went ahead after 4 minutes when outhalf Jonny Sexton kicked through for Tommy Bowe to beat the English defense to touch down. Sexton missed the conversion.
Wilkinson replied with a penalty from 30 yards after striking the post with an earlier kick.
Jonny Sexton kicks Ireland further ahead from a penalty after twenty nine minutes from 25 yards: Ireland lead 8 to 3.
Half an hour in, England are 3, Ireland 8. But Jonny Wilkinson kicks a penalty from 40 yards: Ireland 8, England 6 after 37 minutes.
Torrential rain is helping to make this a tough defensive battle.
A try for Ireland by Keith Earl in the corner when Ireland won a controversial penalty after a fight between both scrum halves; a penalty to England was reversed.
Sexton missed the conversion. Ireland are now leading 13 to 6.
England came back to level the score with a try by Dan Cole under the posts that was awarded after a booth review.
At 62 minutes gone, the game is tied. Brian O'Driscoll is forced off with concussion. O'Gara replaces Sexton at out-half after 69 minutes.
Wilkinson puts England ahead with a drop goal after 70 minutes... England 16, Ireland 13.
A try for Ireland when Tommy Bowe went over under the posts. O'Gara converts Ireland's lead to 20 to 16 with 5 minutes to go.
Ireland have defeated England by 20 to 16. Ireland staged a massive defensive effort despite being outplayed by England for long periods.