SAN JOSÉ, Costa Rica – You can imagine the bemusement MLS newsbreakers had four weeks ago, having checked Twitter on a Saturday night to see the Portland Trail Blazers game day staff had broken their news. That night, at Moda Center, on the big screens that hover above the team’s hardwood court, two Portland Timbers were identified for the crowd, even if only one was actually on the team’s books. The team’s new defender, Dario Zuparic? He’d been signed nearly a month before. The player next to him, though, was supposed to be a secret.