Rangers boss Gio van Bronckhorst refused to be drawn on two big calls from referee Nick Walsh in his side's win at Motherwell.
The 10-man visitors would come through despite Leon Balogun seeing red in the first half for a heavy challenge on Motherwell 's Dean Cornelius.
Juhani Ojala avoided a sending off for a similar challenge on Scott Wright minutes later, but the Dutchman refused to point the finer at whistler Walsh.
