Will Sasso and Rachel Bay Jones join Young Sheldon spin-off

Will Sasso and Rachel Bay Jones have been added to the cast of the upcoming Young Sheldon spin-off, Georgie and Mandy’s First Marriage, according to a TV Line report.

Sasso and Jones, who portray Mandy's parents Jim and Audrey McAllister, have had recurring roles on Young Sheldon throughout its sixth and seventh seasons.

So far, only Montana Jordan and Emily Osment, who of course play the title characters Georgie and Mandy, had been announced as cast members for the spin-off.

In the final season of Young Sheldon, newlyweds Georgie and Mandy, along with their baby daughter CeeCee, moved in with her parents. Georgie then accepted a job at Jim McAllister’s auto and tire shop. As established on The Big Bang Theory, Georgie eventually owns his own chain of tire shops.

Sasso and Jones will make their final appearance on Young Sheldon in the first of tonight's back-to-back episodes, "Funeral". The series will conclude its seven-season run with "Memoir". The Big Bang Theory stars Jim Parsons and Mayim Bialik will guest star in the finale.

Unlike Young Sheldon, Georgie and Mandy's First Marriage is a multi-camera sitcom filmed in front of an audience, similar to The Big Bang Theory. The new show will take over the Thursday 8/7c time slot currently occupied by Young Sheldon, and before that, by The Big Bang Theory.