The Catalan side\'s head coach has made it clear that they will not underestimate their Belarusian opponents in Wednesday\'s Group H match.Barcelona coach Pep Guardiola has stressed that BATE Borisov will not hold any secrets for the Catalans when they lock horns in the group stage of the Champions League on Wednesday. The Belarusian champions are still something of an unknown quantity in European football despite making the group stage of club football\'s elite tournament in 2008-09, but Guardiola feels Barcelona are well prepared.\"The rules of football are the same for everyone. They tell you to study your opponents, and we did exactly that in BATE\'s case,\" Guardiola said at the pre-match press conference.\"You can\'t find Belarusian league matches on our local TV channels, so we sent scouts to study BATE\'s domestic matches and we also examined their play-off games against Sturm Graz. \"We always try to learn and the same rule applies here. Our scouts spotted some things which we\'ll use.\"The Barcelona tactician then went on to warn against complacency as he feels group stage games are always rather difficult.\"Group stage matches are always a bit tricky. They differ from knockout games, when teams have a different approach. Tomorrow\'s match can go a number of different ways, but we still need to play it. \"The same old three points are at stake and they are worth fighting for. So we are approaching this match with a large sense of responsibility.\"Barcelona were held to a 2-2 draw by AC Milan in the Group H opener, while BATE recorded a 1-1 away draw against Viktoria Plzen.