David Wallace (rugby union) a try for Ireland in their 43–13 demolition of England in the 2007 Six Nations Championship, and his form saw him selected in Ireland's squad for the 2007 Rugby World Cup in France. He started all four of Ireland's pool games at the tournament. He was a member of the Irish Grand Slam winning side in 2009. He kept his place in the Ireland team for the November Tests in 2009, and played a crucial role in the win over South Africa. He played in all 5 of Ireland's 2010 Six Nations Championship games and won the Man-of-the-Match award against
Grand Slam (rugby union) are awarded the Six Nations trophy (as tournament winners), but there is no special grand slam trophy – the Grand Slam is an informal honour recognizing a Championship-winning team which has won all their games. Although the term "grand slam" had long been in use in the game of contract bridge, the first time that the expression is known to have been applied to rugby union was in 1957, in a preview of a match between England and Scotland: The Grand Slam honour is applied retroactively to teams which won all of their matches in Five Nations tournaments before the