Here are the H2H rules according to yahoo.
In a Head-to-Head League, your team will square off in a weekly matchup against another manager's team to see who can compile the best stats across a number of different categories.
A new weekly matchup begins every Monday and will consist of a set number of games based on your league's statistical categories. Each stat category counts as one game, with the win going to the team that finishes the week with the highest total in that category (the cumulative total after each Sunday's games).
So, if in a given week, your team hits more home runs than your opponent's, you would be credited with a victory. However, if your opponent's team ended the week with more saves than your team, you would be charged with a loss. If the two teams end up tied in a given category, each will receive credit for a tied game.
This weekly win-loss total will be added to a cumulative season record, which will be used to determine standings and playoff seedings. These standings will be based on your team's overall winning percentage, which is calculated by taking your win total and adding 1/2 of your tie total and dividing the sum by the total number of games your team has played.
Our categories are R, HR, RBI, SB, AVG, W, SV, K, ERA, and WHIP. Thanks! Hope this helps.