Matrix text justification

Hi,

Was glad to see that options to align information in tables/matrices was finally rolled out in this update - hopefully this'll be a simple one and I'm just overlooking something. I've got a couple of basic matrices in my reports, close to as basic as you can get - just the one set of data for rows, columns and values. I want to justify everything in the matrix centrally - the only thing I can't get to align is the very top left entry, i.e. what the column is called that I shove into rows (here "Player"). I've got both column headers and row headers set to justify centrally and neither affects it, am I missing something very obvious here?