The Pioneer League is an independent baseball league in the United States. From 1939 to 2020, it was part of affiliated Minor League Baseball. A league champion is determined at the end of each season. Champions have been determined by postseason playoffs or winning the regular season pennant. Currently, the first- and second-half winners within each division, North and South, meet in a best-of-three series to determine division champions. Then, the North and South division winners play a best-of-three series to determine a league champion.
League champions Series and finalist information is only presented when postseason play occurred; the lack of this information indicates a declared league champion.
YearChampionSeriesFinalist1939Twin Falls Cowboys—1940Ogden Reds3–0Boise Pilots1941Ogden Reds3–1Boise Pilots1942Pocatello Cardinals4–3Boise Pilots1943194419451946Salt Lake City Bees4–2Twin Falls Cowboys1947Twin Falls Cowboys4–1Salt Lake City Bees1948Twin Falls Cowboys4–2Pocatello Cardinals1949Pocatello Cardinals3–2Billings Mustangs1950Billings Mustangs3–0Twin Falls Cowboys1951Great Falls Electrics3–2Twin Falls Cowboys1952Idaho Falls Russets3–0Pocatello Bannocks1953Salt Lake City Bees3–0Great Falls Electrics1954Great Falls Electrics3–2Salt Lake City Bees1955Magic Valley Cowboys3–2Pocatello Bannocks1956Boise Braves—1957Billings Mustangs3–2Salt Lake City Bees1958Boise Braves3–2Great Falls Electrics1959Billings Mustangs3–1Idaho Falls Russets1960Boise Braves3–0Idaho Falls Russets1961Great Falls Electrics3–1Boise Braves1962Billings Mustangs3–0Boise Braves1963Idaho Falls Yankees2–1Billings Mustangs1964Treasure Valley Cubs—1965Treasure Valley Cubs—1966Ogden Dodgers—1967Ogden Dodgers—1968Ogden Dodgers—1969Ogden Dodgers—1970Idaho Falls Angels—1971Great Falls Giants—1972Billings Mustangs—1973Billings Mustangs—1974Idaho Falls Angels—1975Great Falls Giants—1976Great Falls Giants—1977Lethbridge Dodgers—1978Billings Mustangs2–0Idaho Falls Angels1979Lethbridge Dodgers2–0Helena Brewers1980Lethbridge Dodgers2–1Billings Mustangs1981Butte Copper Kings3–2Calgary Expos1982Medicine Hat Blue Jays3–1Idaho Falls A's1983Billings Mustangs3–1Calgary Expos1984Helena Gold Sox3–1Billings Mustangs1985Salt Lake City Trappers3–2Great Falls Dodgers1986Salt Lake City Trappers3–1Great Falls Dodgers1987Salt Lake City Trappers3–1Helena Brewers1988Great Falls Dodgers3–2Butte Copper Kings1989Great Falls Dodgers3–0 Butte Copper Kings1990Great Falls Dodgers3–0Salt Lake City Trappers1991Salt Lake City Trappers2–1Great Falls Dodgers1992Billings Mustangs2–0Salt Lake City Trappers1993Billings Mustangs2–1 Helena Brewers1994Billings Mustangs3–2Helena Brewers1995Helena Brewers2–0Medicine Hat Blue Jays1996Helena Brewers2–0Ogden Raptors1997Billings Mustangs2–0Great Falls Dodgers1998Idaho Falls Braves2–1Lethbridge Black Diamonds1999Missoula Osprey2–0Billings Mustangs2000Idaho Falls Padres2–0Great Falls Dodgers2001Billings Mustangs2–0Provo Angels2002Great Falls Dodgers2–1Provo Angels2003Billings Mustangs2–0Provo Angels2004Provo Angels2–0Billings Mustangs2005Orem Owlz2–0Helena Brewers2006Missoula Osprey2–0Idaho Falls Chukars2007Orem Owlz2–0Great Falls White Sox2008Great Falls Voyagers2–1Orem Owlz2009Orem Owlz2–1Missoula Osprey2010Helena Brewers2–0Ogden Raptors2011Great Falls Voyagers2–0Ogden Raptors2012Missoula Osprey2–1Ogden Raptors2013Idaho Falls Chukars2–1Helena Brewers2014Billings Mustangs2–0Orem Owlz2015Missoula Osprey2–1Idaho Falls Chukars2016Orem Owlz2–0Billings Mustangs2017Ogden Raptors2–1Great Falls Voyagers2018Great Falls Voyagers2–0Grand Junction Rockies2019Idaho Falls Chukars2–1Ogden Raptors20202021Missoula PaddleHeads2–1Boise Hawks2022Grand Junction Rockies2–0Missoula PaddleHeads2023Ogden Raptors2–0Billings Mustangs2024Yolo High Wheelers3–1Glacier Range Riders2025Oakland Ballers3–2Idaho Falls Chukars2026Billings Mustangs2–0Long Beach Coast
Championship wins by team Active Pioneer League teams appear in bold.
WinsTeamChampionship years16Billings Mustangs1950, 1957, 1959, 1962, 1972, 1973, 1978, 1983, 1992, 1993, 1994, 1997, 2001, 2003, 2014, 202612Great Falls Electrics/Giants/Dodgers/Voyagers1951, 1954, 1961, 1971, 1975, 1976, 1988, 1989, 1990, 2002, 2008, 2011, 20188Idaho Falls Russets/Yankees/Angels/Braves/Padres/Chukars1952, 1963, 1970, 1974, 1998, 2000, 2013, 20195Missoula Osprey/PaddleHeads1999, 2006, 2012, 2015, 20214Helena Gold Sox/Brewers1984, 1995, 1996, 20104Ogden Dodgers1966, 1967, 1968, 19694Orem Owlz2005, 2007, 2009, 20164Salt Lake City Trappers1985, 1986, 1987, 19913Boise Braves1956, 1958, 19603Lethbridge Dodgers1977, 1979, 19803Twin Falls Cowboys1939, 1947, 19482Ogden Raptors2017, 20232Ogden Reds1940, 19412Pocatello Cardinals1942, 19492Salt Lake City Bees1946, 19532Treasure Valley Cubs1964, 19651Butte Copper Kings19811Grand Junction Rockies20221Magic Valley Cowboys19551Medicine Hat Blue Jays19821Oakland Ballers20251Provo Angels20041Yuba-Sutter High Wheelers2024
References