Fellaini and Blind get their first competitive goals for Manchester United
United twice had to equalise and came away from West Brom with a 2-2 draw.
United had trailed to Stephane Sessegnon's first half cracker but just moments after coming on as a second half substitute for Ander Herrera, Marouane Fellaini did this.
A great finish from the former Everton man, who shrugged off the attentions of his former team-mate Joleon Lescott to lash the ball past Boaz Myhill.
West Brom rallied and Berahino retook the lead through Berahino's sixth of the season.
With just minutes remaining, Daley Blind guided home his first goal for the club to make it 2-2.