Kincaid attended Downey High School and Whittier College.
[1] He was named head coach of the baseball program at Cerritos, a community college that competes in the South Coast Conference of the California Community College Athletic Association, upon its inception in 1958.
Kincaid led the Cerritos baseball team to a 678–163 win–loss record, 15 conference championships, and six state titles.
[3] He trained successful coaches, including George Horton, Dave Serrano, Don Sneddon, Dave Snow, Mike Weathers, Ken Gaylord, and Bob Apodaca.
[1] A tournament, called the Wally Kincaid 4 July Wood Bat Series, began in 2008.