MLS is uniquely volatile. Salary caps, mid-season roster turnover, altitude differences, and coast-to-coast travel create variance that European leagues don't have. The CURSD Luck Score (CLS) captures it through the same 7-signal model used for the top 5 European leagues, with xPTS delta from Poisson simulation at 25%, finishing luck at 18%, and schedule-adjusted opponent strength providing extra signal in a league where fixture congestion varies wildly between teams. From Inter Miami and LAFC to the Supporters' Shield race and the playoff push, the CLS separates the real contenders from the teams that will fade when regression arrives.