FUNDAMENTAL OUT: DUNCAN ANNOUNCES RETIREMENT… A purveyor of dad jeans and bank shots. Tom Emanski with fundamentals. The greatest power forward ever to walk planet earth. Tim Duncan didn’t want 50 shots in his last game and a farewell tour — instead the 19-year veteran, five-time champion, two-time MVP, and three-time Finals MVP opted to fade into oblivion as quickly as he rose to prominence after signing with the Spurs out of Wake Forest. Duncan, who was a competitive swimmer as an adolescent before Hurricane Hugo destroyed the local pool on his home island of St. Croix, could have been…