Wales and Croatia both go into their game on Tuesday night after big victories on Friday, although the overall situation for both countries is very different.
While Wales have only a very slim chance of qualifying, Croatia are attempting to keep the pace at the top of the group with Belgium, both of whom will want to finish top and book their place in Brazil. Both sides gained big results in their last games, with Wales coming from behind to defeat Scotland and Croatia gaining a victory over Serbia in an historic encounter.
Wales will be without key midfielders Joe Allen and Aaron Ramsey, however - the former is out for the rest of the season while the latter was sent off in the dying minutes of the game against Scotland and is thus suspended. Gareth Bale is, however, back and ready to start.
Serbia meanwhile are nursing wounds of their own, with Josip Simunic carrying a knock and likely to be replaced by Domagoj Vida. Dynamo Kyiv midfielder NIko Krancar is also unavailable, so Croatia could introduce a defensive midfielder such as Ognjen Vukojevic into their side, after they surprisingly started without one at all against Serbia.
Match Date\Time: Tuesday, 7:45 p.m. local, 3:45 p.m. ET
Venue: Liberty Stadium, Swansea, Wales
TV: Sky Sports 1 (U.K.)
Online: Sky Go (U.K.)