My experience years ago:
At the SkyDome:
2000 Todd Helton A-, B- (.995 fld%, 9.88 rff)
154 G in LF, 15 errors (.941 fld%) 4 + plays, 0 - plays
2003 Carlos Delgado B, B+ (.993 fld%, 10.20 rff)
145 G in RF, 7 errors (.971 fld%) 2 + plays, 1 - plays
At Coors:
2004 Albert Pujols B, A+ (.994 fld%, 11.90 rff)
155 G in RF, 13 errors (.941 fld%) 19 + plays, 0 - plays
He was on pace for like 35 + plays midway thru the season but all of a sudden stopped making them