 In 1980 , the WRU 's centenary year , Wales lost to the All Blacks in Cardiff by 23 – 3 after the All Blacks scored four tries to nil . Wales won two matches in each Five Nations of 1980 and 1981 , and in 1983 were nearly upset by Japan ; winning 29 – 24 at Cardiff . In 1984 , Australia defeated Wales 28 – 9 at Cardiff Arms Park and in the process scored a push @-@ over try . Australia went on to win their first Home Nations Grand Slam . 
 In 1980 , the WRU <a href='null_genetive' title='1'><mark>'s</mark></a>centenary year , Wales<a href='been_done' title='2'><mark></mark></a> lost to the All Blacks in Cardiff by 23 – 3 after the All Blacks scored four tries to nil . Wales won two matches in each Five Nations of 1980 and 1981 , and in 1983 <a href='uninflect' title='3'><mark>were</mark></a> nearly upset by Japan ; winning 29 – 24 at Cardiff . In 1984 , Australia defeated Wales 28 – 9 at Cardiff Arms Park and in the process scored a push @-@ over try . Australia went on to win their first Home Nations Grand Slam . 
In 1980 , da WRU  centenary year , Wales been lost to the All Blacks in Cardiff by 23 – 3 after the All Blacks scored four tries to nil . Wales won two matches in each Five Nations of 1980 and 1981 , and in 1983 was nearly upset by Japan ; winnin 29 – 24 at Cardiff . In 1984 , Australia defeated Wales 28 – 9 at Cardiff Arms Park and in tdaprocess scored a push @-@ ova try . Australia went on to win their first Home Nations Grand Slam .