GmSc: Game Score; the formula is PTS + 0.4 * FG - 0.7 * FGA - 0.4*(FTA - FT) + 0.7 * ORB
+ 0.3 * DRB + STL + 0.7 * AST + 0.7 * BLK - 0.4 * PF - TOV. Game Score was created by John Hollinger
to give a rough measure of a player's productivity for a single game. The scale is similar to that
of points scored, i.e., 40 is an outstanding performance, 10 is an average performance, etc.