The Tres Marias Championship was a women's professional golf tournament on the LPGA Tour, played from 2005 to 2010, at Tres Marias Residential Golf Club in Morelia, Michoacan, Mexico.

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Tres Marias Championship

Tournament information
Location	Morelia, Michoacan, Mexico
Established	2005
Course(s)	Tres Marias Residential Golf Club
Par	73
Length	6,539 yards (5,979 m)
Tour(s)	LPGA Tour
Format	Stroke play - 72 holes
Prize fund	US$1,300,000
Month played	April
Final year	2010
Tournament record score
Aggregate	267 - Lorena Ochoa (2008, 2009)
To par	-25 - Lorena Ochoa (2008, 2009)
Final champion
Ai Miyazato

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From 2005 through 2009 the title sponsor of the tournament was Mexican beer Corona. Lorena Ochoa of Mexico won the event three times: 2006, 2008, and 2009.

The 2011 tournament was originally scheduled for April 21–24. On February 2, the LPGA announced that the tournament had been canceled because of concerns about violence in the Mexican state of Michoacan but in reality there was a lack of sponsors to keep going the tournament as Lorena Ochoa retired that year.^[1]

The tournament was not scheduled in 2012.

• 2005-2006: Corona Morelia Championship
• 2007-2009: Corona Championship
• 2010: Tres Marias Championship