My brother's lawn has taken a turn for the worse - with some fairly large dead spots. I need some help identifying the cause, but more importantly, a plan for revival. Here are the specs. -- Atlanta, GA -- Hybrid Bermuda -- 4 year old lawn -- Looked great until early/mid July -- Applied fertilizer in April and mid June (not much rain after the second app) Should we just water the crap out of it? Apply topsoil? Any chance its take-all patch or some other fungus?