John Terry was sent off as Pedro inspired Chelsea to a first Premier League win of the season by beating West Brom 3-2.
Thibaut Courtois saved James Morrison’s early penalty but Pedro, who signed from Barcelona for £21m this week, fired in before setting up Diego Costa.
Morrison then atoned for his earlier error with a crisp strike before Cesar Azpilicueta made it 3-1 at the break.
Terry saw red for a second-half foul on Salomon Rondon but Morrison’s header was not enough as Chelsea hung on.
The result ended a poor start to the season for Chelsea, who have raised as many talking points off the field as on it following controversy surrounding the treatment of their medical staff and Terry’s half-time substitution in the 3-0 loss at Manchester City last Sunday.
Unlike their previous two games Pedro provided them with enough inspiration to build the foundations for an edgy win, though they were given an early let-off after Nemanja Matic tripped Callum McManaman for the early spot-kick.