Eventual Premiers losing by 50+ points during the season

In Round 6 1947, West Torrens defeated West Adelaide 19.15 to 11.12.
In Round 3 1948, West Torrens defeated Norwood 19.15 to 11.12.

This was the only two occasions where Torrens defeated the eventual premiers by 50 points or more in that season.

It has occurred 62 occasions; three premiers have been beaten three times by 50 points or more:
Torrens in 1945
Norwood in 1984
Port in 1995

Two losses above 50:
Norwood 1901
Glenelg 1934
South 1935
West 1947
North 1971
North 1972
Sturt 1976
Port 1981
Port 1988
Port 1994
Central 2008
Eagles 2011

The number of times each team has lost by 50+ in a premiership year:
Central 7
Eagles 4
Glenelg 3
North 5
Norwood 10
Port 19
South 2
Sturt 5
West 4
Torrens 3

The number of time each team has beaten the premier by 50+:
Central 8
Eagles 4
Glenelg 9
North 3
Norwood 7
Port 10
South 5
Sturt 9
West 5
Torrens 2

These occasions where one particular team beat the eventual premiers twice by 50+:
Port/Glenelg 1934
Port/North 1971
Glenelg/Sturt 1976
Eagles/Port 1994

amazing...well done spelly