Iceland enters as the narrow favorite in UEFA Nations League Group C4 due to stronger squad depth, recent World Cup qualifying results against comparable opposition, and a favorable opening schedule featuring home matches against Estonia and Bulgaria. Bulgaria and Luxembourg sit close behind in trader pricing, reflecting their established mid-tier League C status and potential for points from home fixtures or defensive organization. Estonia trails significantly, consistent with its lower FIFA ranking and limited recent success. With all six matchdays still ahead and no group games played, the bunched probabilities around 50% for the leaders highlight the short campaign's inherent variance, where a single result swing or injury can shift promotion odds sharply among these closely matched sides.