The beloved game show host appeared in the Cubs’ broadcast booth at Wrigley Field to lead the crowd in the iconic sing-along.

The 'Jeopardy!' host led Wrigley Field in 'Take Me Out to the Ball Game' wearing a custom 'Jennings 74' jersey.

In the end, Ken Jennings was just too formidable. Naperville native James Holzhauer gave him a run for his money Tuesday night, but it was Jennings who proved himself the ultimate player in the &#8… ...