Bubba Watson leads through 54 holes at the WGC-Cadillac Championship, but as we've seen already this year, anything can happen Sunday on the PGA Tour. Keegan Bradley – who came from a five-shot deficit to win the 2011 PGA Championship late Sunday – is only three shots back. Justin Rose is in the mix, as is Adam Scott and Rory McIlroy. What lead is safe – if any? – and who has a realistic shot of winning the WGC-Cadillac?