"We just followed the whimpers and whines right to the car," Lee would later tell KMBC news, adding there was no food or water inside the car.
The group manged to wedge the windows down and open the car, freeing the puppy at last.
Lee called police, who then got in touch with stadium staff.
"Right when that door opened, I've never seen an animal so happy to be outside," Lee's brother, Michael Warner, told KMBC. "I mean he came running out ... licking every person that touched him, just overjoyed to be out there."