Swansea midfielder Michu scored the opening goal of this season's Barclays Premier League on his debut as the Swans took a 1-0 half-time lead over QPR at Loftus Road.
The Spaniard saw his shot creep past goalkeeper Robert Green after the ball popped up off Wayne Routledge when he was tackled deep in QPR territory in the eighth minute.
Green could have done better as the ball bounced in front of him but the England international was unable to control it as Swansea claimed the early advantage.
Damian Duff opened Fulham's account at Craven Cottage after the home side dominated the early exchanges to lead 2-0 against Norwich at the break.
The Republic of Ireland international latched on to the end of John Arne Riise's diagonal long ball from the left wing to fire home in the 25th minute after Norwich's Andrew Surman saw his early chance tipped round the post.
Mladen Petric headed the home side's second with five minutes remaining in the first half.
Stoke took a 1-0 lead over Premier League new boys Reading at the Madejski Stadium after a goalkeeping error by Adam Federici.
Michael Kightly fired Tony Pulis' side into the lead from close range with the ball slipping through Federici's fingertips.
At the Hawthorns, new West Brom boss Steve Clarke engineered a score against the club he left last season as the Baggies led Liverpool 1-0 after the first period.
Zoltan Gera drilled a shot past Pepe Reina just before the break after Reds striker Luis Suarez missed two great chances to give Liverpool the lead.
West Brom goalkeeper Ben Foster denied Suarez with a fantastic save before the Uruguay international headed over an open goal.
Kevin Nolan gave West Ham a 1-0 lead at half-time over Aston Villa at Upton Park.
Nolan scored from close range in the 40th minute from Ricardo Vaz Te's assist to edge the Premier League new boys ahead
Arsenal dominated Sunderland at the Emirates but were unable to find the breakthrough in the first period despite strong work by Vassiriki Diaby and new signing Lukas Podolski as they were held at 0-0.