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Who in 2004-05, at the age of 30, ran very plus UZR's in Safeco playing center field.
He went to SF and immediately began running horrible UZR's.
Winn was a +7 to +10 runs CF his two years in Safeco, and ran like -17's and -31's and -69's before the Giants yanked him out of center. The IP totals are small in SF because they wisely yanked him out of there. He can't play center in a normal park.
...............
I'm here to tell you that Randy Winn is not a quality ML center fielder, but in Safeco he showed up as a +5, +10 whiz out there.
Will guarantee you that Michael Saunders can play CF better than Randy Winn could.