Nastia Liukin and her temporary pro dance partner Sasha Farber danced the quickstep Monday night on Dancing With the Stars–all the way to a perfect score. The pair earned 40 out of a possible 40 points from the judges.

Four couples remain in season 20’s competition. In addition to Nastia Liukin and Sasha Farber (Do you think Derek Hough will be back?) are Rumer Willis and Val Chmerkovskiy, Noah Galloway and Sharna Burgess, and Riker Lynch and Allison Holker.

Carrie Ann Inaba called Nastia Liukin’s quickstep a ‘showstopper.’

“I feel like you are now a dancer, you are not just a gymnast…that was amazing,” Julianne Hough told her.

Bruno Tonioli said he saw in Nastia Liukin “a glowing, glamourous blond bombshell…I’m telling you, it was a technical tour de force and you were really a star out there.”

.@NastiaLiukin said it perfectly… "It's about the journey" #DWTS

— Official DWTS (@DancingABC) May 12, 2015

And Len Goodman said the secret to a quickstep is to move fast but not to hurry. He then added, “That’s what you did…it had speed but it had control.”

It was definitely an exciting night for Nastia Liukin, but she wasn’t the only dancer with a perfect score. Riker Lynch now has that claim to fame as well.

Which of these four Dancing With the Stars couples do you think will walk away with that coveted mirror ball trophy?

Nastia Liukin Quicksteps To Perfect Score On #DWTS Semifinals – WATCH VIDEO! http://t.co/uHMi5NXKy6 pic.twitter.com/xQwqAok6EL

— Gossip Cop (@GossipCop) May 12, 2015

One couple will be eliminated Tuesday night, with the remaining three going on to the Dancing With the Stars finals on May 18th.

Will Nastia Liukin escape elimination and make it one step closer to the win?