Fenix are far from the top teams in Uruguay but after a good campaign in Clausura managed to finish 5th in the aggregate table (Apertura + Clausura) and get this spot. However,knowing that distance between 5th and 11th place was just 5 points with a bit different luck Fenix could easily have ended in the bottom part of the standings. After the last campaign the team lost some power with the departure of important players - the topscorer of last season Maxi Perez (fw, 27 games, 12 goals) was transfered to Penarol, others who left are Maximiliano Bajter (mf, 24 games, 4 goals) to Belgrano, Santiago Fogst (df, 18 games, 3 goals) to Colón, Oscar Castro (gk, 15 games) to River Plate (URU). The few new players look far from impressive. Fenix haven't played official game since more than 2 months and their condition won't be at its best level.
U de Chile, one of the top 3 most popular and successful Chilean clubs did great winning the title in Apertura, finished the regular phase 2nd at 3 points after Universidad Catolica but later won in the playoffs final against the same rival. For the 2nd part of 2011 U refreshed their team with moves in and out, some players were transfered in other clubs - Felipe Seymour (mf, to Genoa), Edson Puch (fw, to Al-Wasl), José Contreras (mf to Huachipato), Miguel Pinto (gk, to Mexican Atlas), most notable new signings are Osvaldo González (mf, from Toluca), Nelson Rebolledo (mf, from Huachipato), Gustavo Lorenzetti (mf/fw from Universidad de Concepcion), Paulo Magalhaes (mf, Colo Colo). U didn't stop to play on competitive level in July busy with the Chilean Cup, the preliminary playoff for Copa Sudamericana (where they eliminated Deportes Concepcion) and also already played their first game in Clausura, easy 3-0 over La Serena. The game last weekend at Nublense was postponed due to bad weather (U planned to rest only Gustavo Canales, Eduardo Vargas and José Rojas) so luckily the whole team actually got a good rest.
U are no doubt the better and much more experienced team, in top condition so should be able to get a good result in Santiago and not sweat on the return in Uruguay.