The ‘Jeopardy!’ guest hosts, ranked by ratings

There was controversy surrounding the show's decision to put celebrity medical expert Dr. Mehmet Oz on the podium, and this reflected in the numbers. Dr. Oz received an average rating of 5.1.

While the famed news anchor found guest hosting the game show "a really fun thing to do," she also admitted that it's harder than it looks. “It’s pretty exhausting to do five of those in one day — just to make sure you’re pronouncing everything correctly,” she said in a recent interview. Her Nielsen rating was a 5.5.

Did Aaron Rodgers just find his new gig post-football? When asked if he would host full time, the Green Bay Packers legend's response was simple: "Hell yeah, I would." He added: "Look, it’s my second-brain job. I love the show and have a deep, deep affection for it. Not only is it a nostalgic connection to my childhood, but it’s a really special show to me, and I had a great time with everybody that works there." His love for the classic show must have emanated for viewers. He comes in third with a Nielsen rating of 5.6.

It's not surprising that fans responded positively to the award-winning executive producer of "Jeopardy!" stepping up to host the show. Who better than someone who knows the series' inner workings? Richards pulled off the second highest Nielsen rating of all the guest hosts so far with a 5.9.

It's not secret that "Jeopardy!" fans love Ken Jennings, the show's biggest winner ever. Jennings was the first to guest host after Trebek's passing, and it's clear that viewers loved it. He tops off the list with a Nielsen rating of 6.