upstage
US /ʌpˈsteɪdʒ/
UK /ʌpˈsteɪdʒ/

1.
at or toward the rear of a theatrical stage
:
•
The actor moved upstage to deliver his monologue.
•
She positioned herself slightly upstage of the other performers.
1.
to draw attention away from (someone) toward oneself; overshadow
:
•
The new lead actor tried to upstage the veteran performer.
•
She always manages to upstage everyone at parties with her extravagant outfits.