 Other than wins and losses, the most common statistic you will see to compare one picture to another is his earned run average. And usually this would be shortened and we would just say is ERA. So what an ERA is, is a number that tells you based on how a picture has pitched so far, it's the average number of runs that he would give up over nine innings or one complete game. So how do we find the ERA? First thing you do is you would take the number of earned runs that that particular picture has given up and you would divide that by the number of innings that he has pitched. And so what this would give you if you just did this part is, you know, that's the average number of runs that he has given up in one inning. But ERA is for a whole game. And so then what we would do is take that and we would multiply it by nine and that would give you your ERA. So because, you know, there are nine innings in a regulation game. So I went out on the internet and I got an example here that we can run through. It's a pretty simple mathematical thing but just to make sure you got it covered. So I picked out a guy named Babe Ruth and he was a pretty good baseball player. And he's more known for his pitching or he's more known for his hitting but he was actually a pitcher too. And so in 1917, Babe Ruth, he gave up 73 earned runs and that was in 326 innings pitched. So we would take 73 and we divide it by 326 and that's going to give us 0.2239. And so then we would take that number and we were going to multiply it by nine. And then what that would give us is 2.01 and generally the ERA is rounded off to the second digit. So 2.1 is Babe Ruth's ERA for that year, I think it was 1917. And so this is a pretty good ERA to have. Generally when a pitcher's ERA is under three or is three and under, that's a pretty good figure to have because you know that means that you're giving up, on average he would be giving up three runs or less and so hopefully your offense will be powerful enough to get you at least three runs.