RetD, the percentage of games played by defensemen last season for returning players divided by those of all defensemen, is our best guess for a defensive indicator:
Team Ret All RetD RPI 207 207 1.000 Yale 163 180 .906 Brown 144 173 .832 Clarkson 178 223 .798 Princeton 149 203 .734 Harvard 142 205 .693 Dartmouth 99 154 .643 Colgate 118 214 .551 Cornell 118 220 .536 St. Lawrence 112 215 .521 Union 85 207 .411 Vermont 72 216 .333