Wales v Ireland match facts
The countries have met on 115 occasions - Wales lead the series 62-47, with six draws.
Wales' record win was a 29-0 victory in 1907, while Ireland boast a best of 54-10 in 2002.
Ireland have only lost once in Cardiff since 1983, winning 10 games and drawing once from their past 12 visits to the Welsh capital.
The last drawn Test match between Wales and Ireland produced a 21-21 scoreline in Cardiff 20 years ago.
Ireland have won eight and lost three of their 11 Six Nations Tests against Wales.
Former Ireland fly-half David Humphreys holds the record for most points in the fixture, scoring 22 against Wales nine years ago.
Wales scrum-half Mike Phillips and number eight Ryan Jones will both win their 50th caps on Saturday.
Fly-half Ronan O'Gara needs two points to reach 1,000 for Ireland and the British and Irish Lions, which would make him the fifth player in Test history to clock up four figures.
Warren Gatland will break Alan Davies' Wales record for the number of Tests as national coach when he oversees his 36th game at the helm on Saturday.
Ireland captain Brian O'Driscoll needs one try to equal the individual record of 24 for most career touchdowns in the international championship, while Wales wing Shane Williams requires two.