When you finish a match, your player statistics are updated. The number of times a particular opponent has won, lost, and/or tied you are recorded. To see this information, tap Player stats in the lobby menu.
On tablets, an extra "Total" column appears which is the total number of matches you have played against an opponent.
To sort the list, tap the desired column heading.
To remove an opponent from the list, tap his/her row to highlight it, then tap . To remove multiple opponents, tap all of their rows and then tap . To easily clear the entire list, tap instead.