Matchup · 2026
Mason City at Waterloo West
Projected line
Waterloo West at home
Waterloo West -12.5o/u 49.0
Mason City 18 · Waterloo West 31
80%
Mason City at home
Waterloo West -10.5o/u 49.0
Waterloo West 30 · Mason City 19
76%
Neutral site
Waterloo West -11.5o/u 49.0
Mason City 19 · Waterloo West 30
78%
| Site | Line | Total | Win prob | Score |
|---|---|---|---|---|
| Waterloo West at home | Waterloo West -12.5 | 49.0 | 80% | Mason City 18 · Waterloo West 31 |
| Mason City at home | Waterloo West -10.5 | 49.0 | 76% | Waterloo West 30 · Mason City 19 |
| Neutral site | Waterloo West -11.5 | 49.0 | 78% | Mason City 19 · Waterloo West 30 |
Series history
32–30–7
Mason City leads
69
Meetings · 1912–2019
9–1
Last 10 · Waterloo West
2
Waterloo West streak
Biggest wins
Mason City
41-6 · 1983+35
33-0 · 1914+33
32-0 · 1965+32
Waterloo West
48-0 · 1989+48
54-13 · 2019+41
47-6 · 1990+41
Runs & venue
Longest streak: Mason City 7 straight, 1916–1925
Home team: 37-25-7
Playoff meetings: 0
Average margin: 14.6 · decided by 7 or less: 30
By decade · avg margin, Waterloo West view
| 2010s | 5-1 | +25.2 |
| 1990s | 2-0 | +30.5 |
| 1980s | 4-5 | +1.2 |
| 1970s | 2-4 | -1.0 |
| 1960s | 3-3-2 | -1.6 |
| 1950s | 4-4-1 | +6.4 |
| 1940s | 5-2-2 | +9.2 |
| 1930s | 2-4-1 | -4.4 |
| 1920s | 3-5 | -3.1 |
| 1910s | 0-4-1 | -10.8 |
| Season | Result | Model line |
|---|---|---|
| 2019 Sep 6 | Waterloo West 54-13 at Mason City | — — |
| 2018 Aug 31 | Waterloo West 34-0 at Waterloo West | — — |
| 2017 Oct 13 | Mason City 29-28OT at Mason City | — — |
| 2016 Oct 14 | Waterloo West 41-6 at Waterloo West | — — |
| 2015 Sep 18 | Waterloo West 34-12 at Mason City | — — |
| 2014 Sep 19 | Waterloo West 33-13 at Waterloo West | — — |
| 1991 Oct 18 | Waterloo West 34-14 at Waterloo West | — — |
| 1990 Oct 19 | Waterloo West 47-6 at Mason City | Waterloo West -29.0 covered |
| 1989 Oct 13 | Waterloo West 48-0 at Waterloo West | — — |
| 1988 Oct 14 | Waterloo West 7-0 at Mason City | — — |
| 1987 Oct 16 | Mason City 29-7 at Waterloo West | — — |
| 1986 Oct 17 | Waterloo West 27-7 at Mason City | — — |
| 1985 Oct 18 | Mason City 18-6 at Waterloo West | — — |
| 1984 Oct 19 | Waterloo West 14-0 at Mason City | — — |
| 1983 Oct 14 | Mason City 41-6 at Mason City | — — |
| 1981 Oct 8 | Mason City 14-6 at Mason City | — — |
| 1980 Oct 10 | Mason City 15-14 at Mason City | — — |
| 1978 Oct 13 | Mason City 28-8 at Mason City | — — |
| 1976 Oct 15 | Waterloo West 30-6 at Mason City | — — |
| 1973 Sep 14 | Mason City 22-0 at Mason City | — — |
| 1972 Sep 15 | Mason City 28-6 at Waterloo West | — — |
| 1971 Sep 17 | Mason City 7-6 at Mason City | — — |
| 1970 Sep 18 | Waterloo West 35-0 at Mason City | — — |
| 1969 Sep 19 | Tie 14-14 at Mason City | — — |
| 1966 Sep 30 | Mason City 7-0 at Waterloo West | — — |
| 1965 Oct 1 | Mason City 32-0 at Mason City | — — |
| 1964 Oct 2 | Tie 14-14 at Mason City | — — |
| 1963 Oct 4 | Waterloo West 14-13 at Waterloo West | — — |
| 1962 Oct 5 | Waterloo West 26-7 at Mason City | — — |
| 1961 Oct 6 | Mason City 21-20 at Mason City | — — |
| 1960 Sep 30 | Waterloo West 14-7 at Mason City | — — |
| 1959 Oct 2 | Mason City 26-7 at Waterloo West | — — |
| 1958 Oct 3 | Waterloo West 26-20 at Mason City | — — |
| 1957 Oct 4 | Mason City 32-26 at Waterloo West | — — |
| 1956 Oct 5 | Waterloo West 27-6 at Waterloo West | — — |
| 1955 Sep 23 | Tie 14-14 at Waterloo West | — — |
| 1954 Sep 24 | Mason City 13-12 at Waterloo West | — — |
| 1952 Sep 26 | Mason City 21-19 at Waterloo West | — — |
| 1951 Sep 28 | Waterloo West 46-20 at Mason City | — — |
| 1950 Sep 29 | Waterloo West 39-6 at Waterloo West | — — |
| 1949 Sep 23 | Waterloo West 25-6 at Waterloo West | — — |
| 1948 Sep 24 | Tie 7-7 at Waterloo West | — — |
| 1947 Sep 26 | Waterloo West 18-7 at Waterloo West | — — |
| 1946 Sep 27 | Waterloo West 14-0 at Waterloo West | — — |
| 1945 Sep 28 | Mason City 7-0 at Mason City | — — |
| 1943 Oct 1 | Waterloo West 40-0 at Mason City | — — |
| 1942 Oct 2 | Mason City 13-0 at Waterloo West | — — |
| 1941 Oct 3 | Waterloo West 19-0 at Waterloo West | — — |
| 1940 Oct 4 | Tie 6-6 at Waterloo West | — — |
| 1938 Oct 7 | Tie 6-6 at Waterloo West | — — |
| 1937 Oct 8 | Mason City 12-7 at Mason City | — — |
| 1936 Oct 9 | Mason City 26-6 at Mason City | — — |
| 1935 Oct 4 | Mason City 26-13 at Mason City | — — |
| 1934 Oct 5 | Waterloo West 6-0 at Waterloo West | — — |
| 1933 Oct 6 | Waterloo West 7-0 at Mason City | — — |
| 1931 Oct 23 | Mason City 6-0 at Mason City | — — |
| 1929 Oct 25 | Waterloo West 20-6 at Waterloo West | — — |
| 1928 Oct 26 | Waterloo West 10-6 at Waterloo West | — — |
| 1927 Oct 22 | Waterloo West 12-0 at Mason City | — — |
| 1925 Oct 24 | Mason City 14-0 at Mason City | — — |
| 1924 Oct 25 | Mason City 9-6 at Mason City | — — |
| 1923 Oct 27 | Mason City 5-0 at Mason City | — — |
| 1922 Oct 21 | Mason City 26-0 at Mason City | — — |
| 1920 Oct 9 | Mason City 7-0 at Mason City | — — |
| 1917 Nov 10 | Mason City 12-0 at Waterloo West | — — |
| 1916 Nov 11 | Mason City 6-0 at Mason City | — — |
| 1915 Oct 2 | Tie 6-6 at Waterloo West | — — |
| 1914 Nov 21 | Mason City 33-0 at Mason City | — — |
| 1912 Nov 9 | Mason City 3-0 at Mason City | — — |
Every recorded meeting in Brent Moore's all-time archive. Model lines appear for seasons whose archive pages have been built (2021 on, plus any older season you have opened).