(CNN) -- Ireland recovered from trailing at half-time to defeat Scotland 22-15 at Murrayfield and remain on course for their first Grand Slam since 1948 -- a feat that will be achieved if they avoid defeat in their final match against Six Nations champions Wales in Cardiff next weekend.
Jamie Heaslip goes over for the only try of the game as Ireland won 22-15 at Murrayfield.
Chris Paterson and Ronan O'Gara each kicked five penalties apiece, meaning the only try, scored by substitute flanker Jamie Heaslip, proved the difference between the two sides.
The only touchdown came early in the second half when Ireland scrum-half Peter Stringer broke through the Scottish back-row and Heaslip was perfectly positioned to slide over for the try.
O'Gara lobbed over the extra points on an afternoon when he overtook Englishman Jonny Wilkinson's record as the highest-ever points scorer in Six Nations history.
With Wales scraping a 20-15 win over Italy in Rome, the Six Nations title remains finely balanced. A win or draw in Cardiff will see Ireland crowned champions but a narrow defeat will also see Declan Kidney's side take the title on points difference.