Willie Mays has a pretty good case as the #1 defensive outfielder of all time. Most of the numbers favor Andruw Jones, but defensive metrics are notoriously sketchy and Mays is right there.
Five will get you ten that Fox Sports makes a huge fucking deal about it during the All-Star Game in a few weeks and everyone's jersey bears a #24 patch.
My local FOX station has interrupted regularly scheduled programming to air a live 'Remembering Willie Mays' special from their FOX affiliate KTVU Channel 2 Oakland.