Clubs go hunting for new talent in the summer transfer window, where deals get done—or fall apart—and stars arrive in the month-long frenzy.

Atlanta United's long road back to title contention hits a tipping point. A Decision Day miracle sets up a Round One duel against Inter Miami and Messi.

With Messi eliminated, it's anyone's MLS Cup. Riqui Puig's injury stuns the LA Galaxy as they get set to battle the New York Red Bulls for the title.