Saracens moved second in the Aviva Premiership standings after a 42-14 hammering of Harlequins at Wembley.
London Welsh endured a humbling return to the Aviva Premiership with a 52-0 home defeat to Exeter.
Conor O'Shea was pleased with the way Harlequins dug in after they struggled to a hard-fought victory over London Irish.
Dai Young has refused to bemoan David Strettle's disputed last-gasp try that handed Saracens a 34-28 over Wasps.
Harlequins held on to claim a 20-15 victory over London Irish in their season opener at Twickenham on Saturday.
Bath coach Toby Booth paid tribute to George Ford as his match-winning display helped secure a 29-20 win at Sale.
Leicester's Vereniki Goneva blew away Newcastle with a 17-minute hat-trick on the opening day of the Premiership season.
Bath opened their Aviva Premiership campaign with a 29-20 win over Sale as George Ford eclipsed Danny Cipriani.
David Strettle's hat-trick try edged Saracens to a last-gasp 34-28 Aviva Premiership victory over Wasps at Twickenham.
George North joked his hat-trick in Northampton's 53-6 Premiership rout of Gloucester may have seen him peak too early.
George North scored a hat-trick as champions Northampton Saints thrashed Gloucester 53-6 at Franklin's Gardens.
Newly-promoted London Welsh get their 2014/15 Aviva Premiership campaign underway against Exeter Chiefs on Sunday.
Saracens, Wasps, London Irish and Harlequins feature in London Double Header, Sale, Bath, Leicester and Newcastle play.