Big guns fall victim to shocks galore
Just when you least expected it, along came a series of results to throw just about everyone.
Top of the list of unforeseen events was Zebre's first PRO12 win, when they stunned Cardiff Blues by holding on to claim four points from their 30-25 result at the Arms Park.
And if that wasn't enough, Treviso turned Munster over 29-19 in Stadio Monigo while, not to be outdone, the Dragons kept up their unbeaten record at Rodney Parade by successfully holding on to beat the Scarlets 23-16.
Glasgow Warriors rose to the top of the table after they got the better of champions Leinster 12-6 at Scotstoun to make it a triple whammy of eye-catching results.
Zebre, though, took all the plaudits as tries form Mauro Bergmasco, David Odiete and Brendan Leonard helped the league's whipping boys to an historic result over a Blues side which contained the returning Lion Leigh Halfpenny.
Back in Italy, Munster succumbed to their first defeat of the campaign even though the visitors outscored Treviso three tries to one. But a brace of second half scores from Ludivico Nitoglia, set alongside 19 points from the boot of Mat Berquist, undermined Munster's cause, further damaged by having four of their players sin-binned.
With victory over Leinster, Glasgow became the only side to have won all three league outings.