ESPN.com
If you think they're supposed to identify great defensive players, the voters do a pretty lousy job. ... This year, like every year, one can explain the voting results not by examining all the sophisticated fielding metrics with which we're now blessed. No, if you want to explain the Gold Glove you must turn to the Three Big Biases that show up year after year after year. ... For example, the voters love to vote for the guy who won last year. ... the voters' most obvious Big Bias: for the superstar. ... The third Big Bias is about fielding percentage.