Mark J. Rebilas-USA TODAY Sports Oklahoma City, the Dodgers’ Triple-A affiliate, opens play in the new Triple-A West, East Division — nee Pacific Coast League — on Thursday night at Round Rock. Josiah Gray is the Dodgers’ top pitching prospect, and gets the call on opening day for OKC. Baseball Prospectus, ESPN, and The Athletic tabbed Gray as the Dodgers’ top prospect heading into 2021, and he was second behind catcher Keibert Ruiz at Baseball America and MLB Pipeline. Gray and Ruiz were the only two Dodgers rated as consensus top-100 prospects by those national outlets. “It woul...