These ratings are based only on a goalkeeper's "saves ability," as opposed to other skills such as distribution, cutting off crosses, and leadership. 

Player Goals xGoals Attempts SOG SVpct G - xG G / xG
L. Robles 39 45.25 453 145 73.1% -6.25 0.86
T. Hall 39 44.05 426 139 71.9% -5.05 0.89
C. Irwin 35 39.98 380 131 73.3% -4.98 0.88
N. Rimando 28 32.84 301 112 75.0% -4.84 0.85
D. Ricketts 31 35.65 395 124 75.0% -4.65 0.87
M. Reis 7 11.57 119 37 81.1% -4.57 0.60
B. Knighton 14 17.81 194 49 71.4% -3.81 0.79
J. Busch 41 41.92 433 145 71.7% -0.92 0.98
D. Ousted 16 16.91 194 54 70.4% -0.91 0.95
J. Penedo 7 7.25 87 31 77.4% -0.25 0.96
T. Perkins 47 46.50 478 158 70.3% 0.50 1.01
B. Shuttleworth 29 28.42 302 95 69.5% 0.58 1.02
Z. MacMath 43 42.28 435 147 70.7% 0.72 1.02
B. Hamid 40 39.24 364 126 68.3% 0.76 1.02
J. Cannon 11 10.12 126 42 73.8% 0.88 1.09
Excel File: Keeper Data Summary 2013

G - xG = difference between goals allowed and expected goals allowed by an average keeper on the same shots. Negative numbers are good.

G/xG = ratio of goals allowed to goals expected. Numbers less than 1.0 are good.