…on taking more than 5 years to convince the Washington Nationals he’d be an acceptable emergency option. Johnson, 68, was named the new skipper of Nationals earlier today, said move coming shortly after Jack McKeon took over as a mid-season replacement for Edwin Rodriguez in Miami.  I hate to suggest MLB’s owners and GM’s are a trendy lot, but the future job prospects for Larry Bowa, Earl Weaver and John McGraw Whitey Herzog haven’t looked so bright in years.