How is the tie break score calculated in round robin tournaments?

According to this page the tie break score is calculated by adding up the wins of everybody you've defeated. So if you win one game against someone with one win and one draw and two games against someone with one win and one draw your score will be 1 * 1.5 + 2 * 1.5, or 4.5. However, I've just had a look at the score table of a tournament I'm currently playing in (I don't know how to link directly to the specific table, but it's round 1 group 33) and I'm currently in second place. I've got exactly the same win/loss record as the person in first and even have the exact same number of wins and losses against the exact same people (and one win and loss against each other). Yet my score is 8 and theirs is 13.

And neither score seems right. We've both got two wins against two opponents with scores of 1, one win against an opponent with a score of 4, and one win against an opponent with a score of 6. Surely that's 2 * 1 + 2 * 1 + 1 * 4 + 1 * 6 = 14.

Am I missing something obvious?

You can link a table up by searching for your username in "Players", so https://www.chess.com/tournament/400103/player/tiffanyproblem.

Anyway, seems your tiebreaker is 14 - perhaps the site just didn't update it yet.

So it is. Thanks.

Draws

Calculate half the points of the people you draw

Its called sonnebern berger

Also bucholz cut-1

Points of the people you lost against

Using this system in RR's just isn't legit. Here's an example, from chessdotcom's own help files, or a page directly linked to those help files:

Let's say that the top 2 advance while the 3rd is eliminated. Bob is obviously as strong as or better than the other two, since he's in 1st place with a higher score. Mary's tiebreak here is higher than John's, mainly because Mary beat the top player, Bob, while John didn't. That makes Mary better than John, right? Well, Mary lost a game against the 'not so good' player John, but John didn't lose to Mary. To me that means that Mary is a worse player than John, but that's not how these tiebreaks work out.

That meanwhile is the pairing crosstable