Mike Singletary spent his entire playing career as a linebacker for the Chicago Bears. He was drafted by the Bears in the 2nd round of the 1981 NFL Draft and was known as "The Heart of the Defense" for the Monsters of the Midway in the mid-1980s. He was inducted into the Pro Football Hall of Fame in 1998. Mike Singletary has hand signed this Chicago Bears NFL Riddell Mini Helmet. Bold Full Silver Full Signature. Topps Certified Authentic Hologram #4154052 & Athlon Sports Collectibles Certificate of Authenticity. Image of actual item in stock - as shown