Jeremy Mathieu admitted Barcelona played poorly in Sunday's 1-0 win at Celta Vigo but argued that even the best teams are made to suffer sometimes.
The Blaugrana's much vaunted attacking trio of Lionel Messi, Luis Suarez and Neymar struggled to create openings at Balaidos but they were bailed out by Mathieu, who followed up his goal in last month's Clasico by scoring the winner with a thumping header.
