Re: More legitimate Grand Slam Title! Murray V Del GOATro
Both won the US Open which in itself is a legitimate grand slam title...
If you're asking if either one was a fluke, then...again no. Del Potro beat two of the top four on his way to the title and Murray has proved his isn't a fluke by being in various slam finals, and winning the Olympics. He's obviously not a fluke champion. The title of the threat makes little sense.
MURRAY. SODERLING. DJOKOVIC