Umpires barred Dodgers manager Dave Roberts from using a position player to pitch the ninth inning against the New York Mets on Saturday night, enforcing a rule Roberts apparently did not know that prevents teams from using non-pitchers with a deficit of five runs or fewer. With Los Angeles trailing 9-4, Roberts sent utility player Zach McKinstry to the mound to begin the ninth, but McKinstry was halted by umpires. A lengthy delay and discussion followed, and umpires used headsets to discuss the situation with officials in New York.