*Rotoman*asks a good question about G/F.

Is GB rate the same as GB/FB ratio? Do they track together?

On

*Fangraphs*site, it does track together. Let's use**Charlie Morton**as an example. (Here is the link to Morton's*Fangraphs*page).According to

*Fangraphs*, Morton has allowed 204 ground balls, 58 fly balls, and 72 line drives in 2011. His G/F rate is computed by dividing his ground balls by his fly balls (204/58 = 3.52). His ground ball rate is calculated by adding all three of these results and dividing the ground balls by the total number of batted balls (204/334). This gives Morton a ground ball rate of 61.1%.ESPN's page does this differently. They do not track line drives and only track ground balls and fly balls. Their G/F rate computed by dividing ground balls by fly balls, but most of what

*Fangraphs*classifies as line drives are converted into fly balls. So Morton's ESPN ground ball rate is 221/123 for a G/F rate of 1.80. I'm not sure why ESPN is showing Morton with 10 more balls in play against than*Fangraphs*, but I'll leave that to someone else to figure out.
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