Belt is by far the Giants ' best fielder at first base .
His propensity to take a base on balls has always kept his on - base percentage respectable -- including when his average was toiling in the low -. 200 range .
Belt is by far the Giants ' best fielder at first base , and his propensity to take a base on balls has always kept his on - base percentage respectable -- including when his average was toiling in the low -. 200 range .