Both teams doubling the score or better in the last quarter

[spell_check]

There have only been two occasions where this has happened:

Round 6 1899
Norwood 2.2 2.2 4.4 10.10 (70) 1.5 times more
West 0.1 1.1 1.2 3.5 (23) 1.88 times more
Jubilee

Challenge Final 1900
North 1.0 1.1 1.2 4.3 (27) 2.38 times more
South 0.2 0.3 0.5 1.8 (14) 1.8 times more
Adelaide, 7000

There have been a further four matches where one team doubled their score or better and the other within 10% of doubling their score:
Round 2 1909
West 3.3 4.5 4.10 9.12 (66) 1.33 times more
South 0.1 1.3 2.3 5.5 (35) 0.94 times more
Adelaide, 3000

Round 11 1928
Torrens 1.7 1.7 2.14 6.14 (50) 0.92 times more
Norwood 0.1 2.7 2.8 4.16 (40) doubled
Thebarton, 3600

Round 14 1954
North 2.1 7.4 8.5 18.7 (115) 1.17 times more
South 1.3 2.5 2.7 5.7 (37) 0.95 times more
Prospect, 4000

Round 19 2008
Port 0.3 2.4 3.6 6.10 (46) 0.92 times more
West 0.4 0.5 1.6 4.7 (31) 1.58 times more
Richmond, 1260

[SnappyTom]

There have only been two occasions where this has happened:

Round 6 1899
Norwood 2.2 2.2 4.4 10.10 (70) 1.5 times more
West 0.1 1.1 1.2 3.5 (23) 1.88 times more
Jubilee

Challenge Final 1900
North 1.0 1.1 1.2 4.3 (27) 2.38 times more
South 0.2 0.3 0.5 1.8 (14) 1.8 times more
Adelaide, 7000

There have been a further four matches where one team doubled their score or better and the other within 10% of doubling their score:
Round 2 1909
West 3.3 4.5 4.10 9.12 (66) 1.33 times more
South 0.1 1.3 2.3 5.5 (35) 0.94 times more
Adelaide, 3000

Round 11 1928
Torrens 1.7 1.7 2.14 6.14 (50) 0.92 times more
Norwood 0.1 2.7 2.8 4.16 (40) doubled
Thebarton, 3600

Round 14 1954
North 2.1 7.4 8.5 18.7 (115) 1.17 times more
South 1.3 2.5 2.7 5.7 (37) 0.95 times more
Prospect, 4000

Round 19 2008
Port 0.3 2.4 3.6 6.10 (46) 0.92 times more
West 0.4 0.5 1.6 4.7 (31) 1.58 times more
Richmond, 1260

Spelly, you need to switch the factors around (the top one should be 0.94, the latter 1.33)

ST...