Rangers score three second half goals to beat Celtic in Glasgow 's Old Firm Derby . Steven Naismith on target in each half for Rangers who go four points clear at top in Scotland . I 'm Celtic have Charlie Mulgrew sent off in the second half for second bookable foul . Comment:
Rangers score three second half goals to beat Celtic in Glasgow 's Old Firm Derby . Steven Naismith on target in each half for Rangers who go four points clear at top in Scotland . Celtic have Charlie Mulgrew sent off in the second half for second bookable foul . Comment: