Real Mamore clearly the worst team in the Bolivian league, still not relegated just because the transitional season in 2011 with no descending teams but with this pace they will find it hard to remain on this level after few months. In Apertura lost 10 from 12 games with embarrassing goal difference 10-41, both wins were at home thanks to the traditional altitude difference factor which however won't play here. Not much changed for Clausura except few unknown players. e.g. Argentinian Belmonte in attack.
Oriente Petrolero were the best team in the regular stage of Apertura and first got its ticket for the knockout stage but had quite bad luck on the playoff semifinals with The Strongest leaving them empty handed so los refineros will dig hard in this new campaign. In defense and midfield the team is same, attack must be modified after Alejandro Delorte and Juan Carlos Arce left so Alcides Pena again getting regular place (he was OK with 14 goals in 2010) and helped by Reyes Antelo promoted from the junior team. May be it is still early to know what Petrolero can do upfront with this new pair but with knowing the ease with which Real Mamore are conceding goals it is not much worrying.
Unlike other games in Bolivia here the home factor is not so big as both teams are from the valley. Oriente Petrolero won with a margin all 4 mutual games in 2011 scroing total 16 goals in these, including the couple of visits in Trinidad won by 4-1 and 5-2. Another win in the row shouldn't be under big question but as it is first round in 2012 going with careful stake.