New York Yankees general manager Brian Cashman had suspected that the Houston Astros had been breaking rules against electronic sign stealing long before Commissioner Rob Manfred released his report in January that resulted in three big league managers losing their jobs. ''I'll acknowlege at that we had many a conversion with Major League Baseball the last number of years about suspicions, but having suspicions and being able to prove it are two different things,'' Cashman said Friday. Manfred disciplined the Astros after he found the team broke rules by using electronics to steal signs during 2017 and 2018.