Catcher Buster Posey, seen here during a spring training workout Sunday, has been told by the San Francisco Giants that he should avoid blocking home plate. Posey broke his leg on a scoring play at the plate last season. Darron Cummings/AP hide caption

itoggle caption Darron Cummings/AP

Gary Carter slides over home plate during a New York Mets game in the 1989 season. The Hall of Fame player died Thursday, of brain cancer. Rick Stewart/Getty Images hide caption

itoggle caption Rick Stewart/Getty Images