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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Aron Kurttila# | 1.456 | 1933 | |
| 2 | Lari Lehtonen# | 1.804 | 1932 | |
| 3 | Markku Illman# | 1.918 | 1933 | |
| 4 | Ville Mustonen# | 2.092 | 1932 | |
| 5 | Ville Mustonen# | 2.298 | 1933 | |
| 6 | Sampo Gustafsson# | 2.329 | 1933 | |
| 7 | Kari Terho# | 2.399 | 1931 | |
| 8 | Joni Pirinen# | 2.403 | 1932 | |
| 9 | Simo Lund# | 2.415 | 1933 | |
| 10 | Joona Itälä# | 2.468 | 1933 | |
| 11 | Kauko Storgårds# | 2.478 | 1932 | |
| 12 | Mikko Salminen# | 2.538 | 1933 | |
| 13 | Kari Terho# | 2.728 | 1932 | |
| 14 | Kauko Storgårds# | 2.787 | 1931 | |
| 15 | Aalto Hedlund# | 2.900 | 1932 | |
| 16 | Juuso Antikainen# | 2.915 | 1932 | |
| 17 | Benjamin Koskinen# | 2.943 | 1932 | |
| 18 | Sipi Kulmala# | 2.944 | 1933 | |
| 19 | Benjamin Koskinen# | 2.975 | 1933 | |
| 20 | Joonas Riikonen# | 2.994 | 1932 | |
| 21 | Aleksi Peltoniemi# | 3.381 | 1932 | |
| 22 | P.G. Carlson# | 3.419 | 1931 | |
| 23 | Markus Vaarna# | 3.454 | 1932 | |
| 24 | Ilkka Nyman# | 3.479 | 1932 | |
| 25 | Aalto Hedlund# | 3.514 | 1931 | |
| 26 | Elliot Puljujärvi# | 3.647 | 1931 | |
| 27 | Jukka Savolainen# | 3.805 | 1931 | |
| 28 | Leevi Nurminen# | 3.835 | 1932 | |
| 29 | Aleksi Peltoniemi# | 3.880 | 1931 | |
| 30 | Mika Lohi# | 4.071 | 1931 | |
| 31 | Jari Antonsson# | 4.180 | 1932 | |
| 32 | Aron Kurttila# | 4.243 | 1932 | |
| 33 | Markus Vaarna# | 4.280 | 1931 | |
| 34 | Simo Lund# | 4.362 | 1932 | |
| 35 | Frederik Nordin# | 4.425 | 1931 | |
| 36 | Paavo Mehto# | 4.489 | 1931 | |
| 37 | Tomi Engberg# | 4.530 | 1931 | |
| 38 | Harri Kettu# | 4.546 | 1931 | |
| 39 | Sebastian Sundman# | 4.578 | 1932 | |
| 40 | Mikko Salminen# | 4.580 | 1931 | |
| 41 | Aapo Pöljänen# | 4.602 | 1932 | |
| 42 | Matti Palo# | 4.671 | 1932 | |
| 43 | Andreas Närhi# | 4.706 | 1932 | |
| 44 | Joonas Raitanen# | 4.790 | 1932 | |
| 45 | Tomi Oikarainen# | 4.850 | 1931 | |
| 46 | Kalle Nurminen# | 4.870 | 1932 | |
| 47 | Tapio Keinänen# | 4.899 | 1932 | |
| 48 | Tapio Keinänen# | 4.920 | 1931 | |
| 49 | Veli-Pekka Rönnholm# | 4.974 | 1932 | |
| 50 | Sampo Gustafsson# | 5.052 | 1932 | |
| 51 | Simo Lund# | 5.059 | 1931 | |
| 51 | Teemu Reunanen# | 5.059 | 1931 | |
| 53 | Tomas Peiponen# | 5.115 | 1932 | |
| 54 | Kristian Väänänen# | 5.117 | 1931 | |
| 55 | Lucas Lahtela# | 5.171 | 1932 | |
| 56 | Sipi Kulmala# | 5.239 | 1932 | |
| 57 | Tuomas Viljanen# | 5.261 | 1932 | |
| 58 | Aron Göthfelt# | 5.280 | 1932 | |
| 59 | Oskari Sipilä# | 5.319 | 1932 | |
| 60 | Mikko Salminen# | 5.333 | 1932 | |
| 61 | Sami Kronström# | 5.377 | 1931 | |
| 62 | Tomi Voutilainen# | 5.400 | 1931 | |
| 63 | Sipi Kulmala# | 5.467 | 1931 | |
| 64 | Aron Göthfelt# | 5.496 | 1931 | |
| 65 | Kalle Nurminen# | 5.512 | 1931 | |
| 66 | Joona Lampinen# | 5.519 | 1932 | |
| 67 | Leif Kamark# | 5.521 | 1931 | |
| 68 | Mika Liukkonen# | 5.529 | 1931 | |
| 69 | Bengt Ahvenjärvi# | 5.782 | 1931 | |
| 70 | Tomas Peiponen# | 5.881 | 1931 | |
| 71 | Pekka Louhivaara# | 5.893 | 1931 | |
| 72 | Heimo Aallikko# | 5.927 | 1932 | |
| 73 | Mika Liukkonen# | 6.025 | 1932 | |
| 74 | Miikka Hyttinen# | 6.051 | 1932 | |
| 75 | Lucas Lahtela# | 6.109 | 1931 | |
| 76 | Elvis Paajanen# | 6.111 | 1931 | |
| 77 | Heimo Aallikko# | 6.235 | 1931 | |
| 78 | Toivo Ruusulaakso# | 6.359 | 1931 | |
| 79 | Tuomas Viljanen# | 6.364 | 1931 | |
| 80 | Matti Palo# | 6.469 | 1931 | |
| 81 | Theodor Turunen# | 6.472 | 1931 | |
| 82 | Daniel Tuomi# | 6.490 | 1932 | |
| 83 | Kimmo Bränn# | 6.780 | 1931 | |
| 84 | Elias Houtsonen# | 6.781 | 1931 | |
| 85 | Leevi Aikio# | 6.904 | 1931 | |
| 86 | Arne Virho# | 7.139 | 1931 | |
| 87 | Arto Dunder# | 7.172 | 1931 | |
| 88 | Andreas Närhi# | 7.196 | 1931 | |
| 89 | Veli-Pekka Rönnholm# | 7.451 | 1931 | |
| 90 | Esko Hatakka# | 7.767 | 1931 | |
| 91 | Antti Kalpio# | 7.841 | 1931 | |
| 92 | Antero Seversson# | 8.507 | 1931 |
