Charles Frederick Day
- Bats Left, Throws Left
- Height 5' 9", Weight 160 lb.
- School Mohawk Valley Community College
- High School Central High School (Ilion)
- Debut June 15, 1969
- Final Game September 24, 1974
- Born August 31, 1947 in Ilion, NY USA
Boots Day was the first ever batter at Veterans Stadium in Philadelphia on April 10, 1971. He and Rusty Staub had the highest batting averages on the Montreal Expos that year, a team during the second dead-ball era that hit .246.
He was primarily a centerfielder in the majors, getting 300+ at-bats twice.
Boots was a two-way player in the minors, pitching in 87 games. He had eleven seasons total in the minors, spending parts of five of them with Evansville, after the end of his major league career. In his best season as a pitcher, he had a 2.40 ERA in 14 appearances with Evansville in 1978, a year in which he also played outfield and first base. He had no pitching appearances in the majors.
Day began his coaching career in 1982 in the Detroit Tigers organization and later scouted for the Tigers, New York Yankees and Kansas City Royals. He has coached in the Royals, Cleveland Indians, St. Louis Cardinals, Arizona Diamondbacks and Washington Nationals farm systems.
His given name was "Charles Day", and he is not to be confused with contemporary minor leaguer Charles Day, who was playing in AAA at the same time as Boots was.
- 1995 Manager Evansville Otters
- 1996 Coach Buffalo Bisons
- 1997 Coach Kinston Indians
- 1998 Coach Prince William Cannons
- 1999-2001 Coach Memphis Redbirds
- 2002-2003 Special Instructor St. Louis Cardinals
- 2004 Coach Wilmington Blue Rocks
- 2005-2006 Coach High Desert Mavericks
- 2007 Coach Columbus Clippers
- 2008 Coach Lancaster Barnstormers
- 2011 Coach Normal CornBelters
- 2013 Coach Evansville Otters