Hey stlhead, it was the Who they opened up for in 80'. It was the Who's farewell tour in the Kingdome, and the Clash rocked the house down. Not many stuck around for the Who (I did). It was an awesome concert, but my ears bled for a couple weeks after that. LOL (just kidding, just wrang alot). They may have opened for the Stones, but don't remember them opening for them the few times I saw the Stones (which this was in WA, not sure where you meant statewise).