Who has the most tries in the nrl?
No context provided
Who has the most career tries scored in the nrl?
Ken Irvine Irvine
No context provided
Who has the most single season tries scored in the nrl?
Dave Brown Brown
List of National Rugby League records
https://en.wikipedia.org/wiki/List%20of%20National%20Rugby%20League%20records
List of players with 100 NRL tries
https://en.wikipedia.org/wiki/List%20of%20players%20with%20100%20NRL%20tries
The National Rugby League (NRL) is Australia's top-level domestic men's rugby league club competition. 
National Rugby League
No other player has yet managed 200 tries in their Australian club career, with the closest to Irvine's tally being Melbourne Storm player Billy Slater, who scored 190.
Ken Irvine
He won two premierships with Easts and scored so many points, tries and goals and established so many records (some may never be bettered) that he is referred to as "the Bradman of league". 
Dave Brown (rugby league, born 1913)
The National Rugby League (NRL) is Australia's top-level domestic men's rugby league club competition. Ken Irvine has the most career tries scored in the NRL. No other player has yet managed 200 tries in their Australian club career, with the closest to Irvine's tally being Melbourne Storm player Billy Slater, who scored 190. Dave Brown, who has won two premierships with Easts and scored so many points, tries and goals and established so many records that he is referred to as "the Bradman of league," has the most single season tries in the NRL.