Bill Belichick surprises Rich Eisen live on NFL Network with check for charity

During Sunday's NFL combine coverage on NFL Network, a guest entered the booth -- Bill Belichick.

The Patriots coach stopped by to deliver a check to host Rich Eisen for #RunRichRun, which benefits St. Jude Children's Research Hospital. Eisen runs a 40-yard dash for charity annually at the event, and for the last several years Belichick has donated money to the cause.

Here's how it went on TV.

Bill Belichick surprised @richeisen in the booth and donated to #RunRichRun benefitting the children at @StJude --You can join the cause too! -- https://t.co/bzHM2uPTli pic.twitter.com/ats4gzW64M