By Lizzy Becherano The Portland Thorns are through to the NWSL final. The Thorns triumphed 2-1 over the San Diego Wave on Sunday at Providence Park, as goals from Raquel Rodriguez and Crystal Dunn secured their ticket to the championship game for the first time since 2018. The Wave proved to be a difficult opponent, opening up the scoring in the eighth minute of the match after Alex Morgan sent a cross in to Taylor Kornieck, who headed it into the back of the net to earn the lead. “It will take a lot of defensive cover,” Becky Sauerbrunn said about containing Kornieck and Morgan. “I think with…