According to FOX Sports' Ken Rosenthal , the New York Mets are not happy about the lengths the Los Angeles Dodgers were willing to go to gain a defensive advantage before Friday's game. In a report filed Saturday afternoon, Rosenthal says the Mets immediately contacted Major League Baseball officials after learning that the Dodgers intended to mark prearranged defensive positions in the outfield grass at Citi Field. [Related: There's a good explanation for Howie Kendrick's mysterious actions ] This practice would be an extension of the Dodgers known use of a laser rangefinder to determine the best ways to position their fielders. In this case, the Mets were having none of it and essentially told the Dodgers to shut down the operation. Here's more from Rosenthal's report: The Mets' grounds crew told club officials that the Dodgers informed them that if the markers were removed, Dodgers players would dig holes in the outfield with their cleats. The Mets then instructed their grounds crew to erase or obliterate anything they saw on the playing surface. Well, this certainly adds another layer to the growing Dodgers-Mets rivalry. It also adds another layer to our earlier story about...