David Muir has been beaten in a vital ratings metric by NBC News' new star Tom Llamas in an embarrassing blow to his bosses at ABC News. Muir, 51, was watched by 891,000 viewers in the 25-54 age ...

David Muir has been beaten in a vital ratings metric by NBC News' new star Tom Llamas in an embarrassing blow to his bosses at ABC News. Muir, 51, was watched by 891,000 viewers in the 25-54 age ...

Muir has held the primetime crown for the past nine years running, after erasing that gap in a matter of years. The life-long newsman is only 51 and is seen as having a lengthy career at the top ...