A source tells ET who the frontrunners are -- and aren't -- at the 'Today' show.
Before Lauer was fired over allegations of sexual misconduct, he and Guthrie had grown close professionally in their five years of working together.
Guthrie, who had been Lauer's co-anchor since 2012, took the news particularly hard, a source tells ET.
The 59-year-old journalist released a public apology on Thursday, the same day he was seen out and about in New York.
ET's source says Guthrie and Lauer 'were close personally and professionally.'
Savannah Guthrie, Hoda Kotb and Al Roker were all smiles during the event, but avoided any mention of their former co-host's shocking termination during the two-hour broadcast.
The journalist's morning news colleagues weighed in after the news broke, including Gayle King, Robin Roberts and Megyn Kelly.
TV's biggest talk shows pulled out all the stops on Tuesday.
