I see people quoting player's yardage figures all the time when judging their performance. Can anyone tell me whether yardage figures are adjusted for the following: 1. How long the player is on the field? 2. How long the team had possession? 3. Whether a player's meters gained were easy gallops upfield when the team has a roll on or whether they were a tough slogging barge when pinned down in our own 20m zone having gone nowhere on the preceding plays? I'll stand to be corrected, but until I'm told that such things are factored in, it seems like yardage is an invalid and frankly pretty lazy way to assess a player's performance.