Last week, Ken Jennings became the first guest host of the beloved game show “Jeopardy!” in the wake of the death of Alex Trebek. Now, he’s speaking out to admit that hosting the show is “nerve-racking,” and to say that he wishes Trebek was still here.

“I’m like everybody else, I wish it was still Alex out there. But the main thing I noticed is what an amazing job he did, he made it always look so effortless and graceful,” Jennings told the Seattle Refined.

Trebek passed away back in November at the age of 80 following a battle with pancreatic cancer. He had been the host of “Jeopardy!” since 1984, hosting over 8,000 episodes of the show.

“It’s been really rough missing him and also just missing ‘Jeopardy!’ with him,” Jennings said. “I think that’s what we’re grieving, the fact that he would be part of our lives, that we could have Alex hosting ‘Jeopardy!’ every evening. I kind of wanted to open the show that way and just say, ‘Look, you can’t replace a great like Alex Trebek. We want ‘Jeopardy!’ to continue. It won’t be the same, but it will still be ‘Jeopardy!'”

Jennings first competed as a contestant on Jeopardy back in 2004, winning 74 games consecutively and over $3.3 million.  Sony Pictures has announced that there will be a series of guest hosts of “Jeopardy!” over the next few months until a permanent host is decided upon, according to Fox News.

“Katie Couric, Aaron Rodgers, Bill Whitaker, and Mayim Bialik will each take their turn as guest hosts of Jeopardy! As a part of each guest host’s appearance, a donation will be made to a charity of their choice,” the show’s official Twitter account tweeted on Wednesday.

Jennings also recently opened up about a day he spent with Trebek that he will never forget.

“I was backstage with him at a tournament and it was before the cancer diagnosis, but he was having a rotten day. He was just feeling lousy. But then the music turned on and the announcer said his name and he just turned him to Alex Trebek and walked out there,” Jennings remembered.

“I asked him about it later and it was not a performance. You know, he’s somebody who actually feels best and is at his most confident and capable when he’s doing his job when he’s hosting ‘Jeopardy!’ because that’s the thing that he has made himself the best in the world at over the last 37 years,” he added. “I really admire that.. just the idea that the thing you love, the place where you feel like you’re at home, can keep you going. I think about that day not just when I’m on TV, but when I’m doing anything… working on a book or when I’m doing an interview, you know, I just kind of think, how would Alex treat this?”