Year - Year in which the season  occurred

 Tm - Team they played for

 Lg - League they played in

 G - Games played

 PO - Putouts

 A - Assists

 E - Errors

 DP - Double Plays

FP - Fielding Percentage [(A + PO) / (A + PO + E)]

lgFP - ML Avg. Fielding Percentage at that position that year [(A + PO) / (A + PO + E)]

RF - Range Factor [(A + PO) / G or 9 * (A + PO)/ Inn]

lgRF - Major League Average Range Factor at that position that year

GS - Games Started (available for 2000 on)

Inn - Innings Played (available for 2000 on)