6. Dave Bancroft, 1920-1930, 22.5 WAR
Bancroft was the shortstop during a fruitful time in Giants history, winning two world series in three straight appearances from 1921-1923. Bancroft’s time with the Giants, like Ward’s, is deceiving. Bancroft spent a few years in Boston, then Brooklyn before finishing his career with the Giants. He actually had a higher WAR before his final season with the Giants.
His first stint with the Giants was fruitful, as he accrued a 22.8 WAR. On the flip side, he had a -.3 WAR in his final season. Not enough to put him higher on the list, but Bancroft was surely a big time player in the early twenties.
His overall numbers are nice, with a .310/.382/.413/.795 slash-line. Bancroft was also a really good fielder, with a 10.7 defensive WAR in his time with the Giants. Creepily enough, he has a total of 666 career errors. Not an astute fielder, he has a .944 fielding percentage.
Bancroft’s numbers in his six seasons with the Giants were his best of any stint with other teams. He was voted into the hall of fame, so being on this list shouldn’t be that surprising. He has two world series rings, both with the Giants.