Very interesting match between USA and Costa Rica.First, there will be one fewer rest day. Three full days between matches is typical, but the U.S. will get just two between Wednesday and Saturday, one of which will be gobbled up by serious travel from Costa Rica to Chicago. Then, there's the artificial turf to consider, and the fact that some MLS players could be playing three matches in eight days. L.A. Galaxy forward Landon Donovan will be one of them if he's picked for duty in both U.S. matches.Further subtracting from the predictability Bradley has worked hard to create was a recent staff change. Assistant Peter Nowak left U.S. Soccer last Thursday to assume the expansion Philadelphia Union's managerial seat.The ship was tossed even more with Sunday's revelation that in-form midfielder Maurice Edu would be unavailable for the Costa Rican trip with a knee injury. He apparently was injured on May 24 in his final Scottish Premier League match, an injury a little more serious than Rangers officials initially understood.Now consider that five U.S. players are carrying yellow cards: Jozy Altidore, Michael Bradley,Clint Dempsey,Frankie Hejduk and Oguchi Onyewu. You may recognize that list as almost half the starting lineup from the most recent U.S. qualifier test, an April 1 win over Trinidad and Tobago. So you can see how Bradley is clearly playing chess, not checkers, when it comes to picking Wednesday's side.Barring unforeseen adjustments, the Ticos' 4-4-2 arrangement will attempt to parlay high pressure with the opposition's unease of playing inside the octagonlike fences surrounding the pitch. The fullbacks will get forward liberally, and the outside midfielders will pinch in to allow a freer role for Centeno.Road qualifiers are rarely lovely affairs, more back-alley brawl than Joga Bonito. A trip to Costa Rica, a side with three previous World Cup appearances, might have been one of the few chances for the Americans to go on the road and actually play a little soccer.But word is out that the FieldTurf at Saprissa is a gnarly, overused mess. It was installed in 2004 and has been bypassed by major upgrades in the turf technology since. As it is, five years of concerts and heavy play have left this version more beaten up than a Supreme Court nominee. So we're probably in for another night of brass-knuckle tactics on both sides.For me USA will win here and take this game very seriously.