authorizing via the rewards server an award to {HEAD ~ the rewards} qualified user of one of the plurality of {TAIL ~ gaming machines} 
authorizing via the rewards server an award to { HEAD ~ the rewards } qualified user of one of the plurality of { TAIL ~ gaming machines }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL