Former managers believe black card should have got trial run

John O’Mahony believes the GAA will overcome any chaos arising from the introduction of the black card next month.

Croke Park and the national referees’ association are braced for teething problems as players, referees, managers and spectators get acquainted with the new disciplinary measure.

O’Mahony and Mick O’Dwyer are two former inter-county managers who feel the black card should have been trialled first.