However, Jorge Luis Pinto's side are fully deserving of a place in the last 16, and they will fancy their chances against a Greece side that only qualified for the second round in the final minute of their match with Ivory Coast.
Pinto is likely to keep changes to a minimum as he looks to maintain his team's momentum in the tournament.
Greece looked down and out against Ivory Coast on Tuesday evening before Georgios Samaras struck from the penalty spot in added-on time to help his team reach the knockout stages for the first time in their history.
Costa Rica: WLDWW
Possible starting lineups
Costa Rica: Navas, Gamboa, Diaz Campbell, Miller, Gonzalez, Duarte, Ruiz, Borges, Campbell, Tejeda Valverde, Brenes
Greece: Glykos, Torosidis, Holebas, Karagounis, Manolas, Papastathopoulos, Salpingidis, Maniatis, Samaras, Samaris, Christodoulopoulos
Sports Mole says: 2-1
See what our Sports Mole Sofa panel have to say about the match below.