The only thing you would be putting in their face would be ONE of the tables on pages 266-268.
For example, if the player has a K-factor of 30, you would give him the table in the upper left corner of page 267. This table has a grand total of 16 lines and 4 columns – the columns being “rating difference” and H, D, L. This would fit easily on one side of a business card.
On the other side of the card could be printed the instructions:
“Table shows rating change per player per game, as a function of rating difference, for a player with K-factor 30. Use column H if higher-rated player wins, D if game is drawn, L if lower-rated wins. Winner gains points, loser loses points. If game is drawn, lower-rated gains points, higher-rated loses points.”
Bill Smythe