A day after Mexico regained some confidence and found its offense, manager Sven-Goran Eriksson said he was not sure how different the team would look against Costa Rica.

Many regulars were absent for Wednesday's 5-1 drubbing of Bolivia and many of them might not be available for the Costa Rica match.

"We have a few players who we do not know if they will be ready to play against Costa Rica, such as [Andres] Guardado, Nery Castillo, [Omar] Arellano, [Jonny] Magallon," Eriksson said. "It is diffiuclt to say what players will be on the field but I do know that I will call in a lot of players."

In a little more than one week, Mexico's national team will gather to prepare for Costa Rica. When Mexico faces los Ticos on March 28, the team may do so without the aforementioned players.

Of the quartet, only Castillo saw time against the U.S., and he left early in the match due to injury. Arellano and Magallon have returned for Chivas and both would likely be available for Mexico duty, but Eriksson expressed doubts about all of the players.

Another injury blow could be Oswaldo Sanchez. The longtime goalkeeper was injured on March 5 in a CONCACAF Champions League match and didn't play in Santos' league match on Sunday nor Mexico's game on Wednesady. Eriksson said he wasn't sure if the goalkeeper would regain his health in time to contribute.

"I do not know if Oswaldo will be called up," Eriksson said. "He has one game left with his club before we release the roster so we will evaluate him after that."

Eriksson seemed to even cast doubt on the players who did well against Bolivia.

"With the forwards, [Omar] Bravo and [Matias] Vuoso played very well but I cannot say if they will be there or not. Without a doubt I would love to have them all available but I have not yet made the next roster. --Goal.com

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