Northampton clawed back 15 unanswered points to defeat Glasgow 24-15 in a European Cup clash on Sunday, as Sale trumped Cardiff Blues in a 34-33 thriller. Glasgow roared into a 15-point lead thanks to tries by Josh Strauss and Sean Lamont, Peter Horne nailing a penalty and conversion. But Saints\' stand-out Samoan centre George Pisi hit back with two tries, one converted by Stephen Myler, to make it 15-12 to the visitors at the break. Myler then crossed for a try minutes after the break and Russian winger Vasily Artemyev also touched down to ensure a bonus-point victory for Northampton, European champions back in 2000. In Salford, Sale left it late in beating Cardiff Blues, for whom Wales wing Alex Cuthbert scored a hat-trick, all converted by full-back Leigh Halfpenny who also notched up four penalties. However, that haul was not enough as Sale, whose league form has so far this season been woeful, launched a comeback inspired by a Danny Cipriani try with 25 minutes remaining. Mark Jennings and Tony Buckley also crossed the whitewash and, allied with 12 points from Nicky MacLeod\'s boot and Rob Miller providing a crucial penalty and two conversions at the death, Sale grabbed an unlikely yet vital victory.