Answer
Ken Irvine scored more career tries in the Australian first-grade than Slater. Irvine played for South Sydney Rabbitohs from 1961 to 1972, scoring a total of 212 tries, including 11 tries in a single match against Western Suburbs Magpies in 1965. Slater, on the other hand, has scored a total of 190 tries in his career, playing for Melbourne Storm and Queensland Maroons.