Which teams have never played in the world series? As of September 2021, three Major League Baseball (MLB) teams have never played in the World Series: 1. Seattle Mariners: The team was established in 1977 and is based in Seattle, Washington. Despite having some successful seasons and making multiple playoff appearances, the Mariners have never advanced to the World Series. 2. Washington Nationals: While the Nationals franchise itself has played in and won the World Series (in 2019), the team was formerly known as the Montreal Expos and was based in Montreal, Quebec, Canada. The Expos, established in 1969, never played in the World Series before relocating to Washington, D.C., and becoming the Nationals in 2005. 3. Colorado Rockies: Established in 1993 and based in Denver, Colorado, the Rockies have made several playoff appearances and reached the World Series once, in 2007, but did not win. It’s worth noting that teams' fortunes can change rapidly in sports, and new teams may have joined the league or existing teams may have reached the World Series since my last training data in September 2021. Was this response better or worse? d9 Better CP Worse = Same X
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