Right-handed pitcher Mike Dunnigan earned four varsity letters during his four years at McKendree College. In three different years, Mike led his McKendree teams with the lowest earned run average. He was named to the NAIA All-District Baseball Team twice. 

Mike excelled both on and off the field at McKendree. In 1982, his senior year, he was named to the NAIA Academic All-American Baseball Team. He was the first McKendree athlete ever to receive that honor.

In 1997, Mike was inducted to the McKendree University Athletics Hall of Fame.

From 1979 to 1986, Mike was an all-star playing for Belleville in the Mon-Clair league. He was inducted to the Mon-Clair Hall of Fame in 2008.

Mike graduated from Belleville West High School in 1978 and was named to the all Southwestern Conference team his senior season. He also played American Legion baseball for the legendary Barney Elser with the Belleville Hilgards where he was a two-time District 22 all-star.

Mike was inducted to the Illinois Sports Hall of Fame in 2025.

Mike has been a member of the Greater St. Louis Amateur Baseball Hall of Fame Board of Directors since 2022.