The "Since U Been Gone" singer has pulled out of the Battle Rounds of the hit show, and Ballerini was announced as her fill-in on Monday night's (22Mar21) episode.
"Who do we blame when you make a mistake?" Legend responds, prompting the newcomer to quip, "Her!"
Kelsea was also quick to carry on Kelly's tradition of poking fun at the other coaches, telling Shelton, "Hey Blake, have I ever told you that you look like my dad?"
Ballerini has taken to social media to thank Clarkson for the chance to sit in for her, stating, "When she (Clarkson) calls and asks you to keep her seat warm, you put all those years of being her superfan to work... forever #teamkelly."
It's not known if Clarkson's illness will impact her billed performance at Michelle Obama's virtual "Girl Talk" livestream on Thursday (25Mar21).
The former U.S. First Lady has teamed up with the Girls Opportunity Alliance to host the event on 25 March (21) at 9pm ET, and she'll front the keynote conversation with two students, moderated by talk show host Lilly Singh.
The night will also feature interactive question-and-answer sessions, a musical performance by Clarkson, and special guests, also including "black-ish" star Marsai Martin, Orlando Bloom, Chiwetel Ejiofor, and Demi Lovato.
Martin will talk about empowerment as she hosts Stepping Into Your Power 101! and Cravalho will front a 3 Ways to Dream Big panel.
More details about the virtual empowerment evening can be found here: popsugargirltalk.splashthat.com.