"I'm going to try to keep him going," Bochy said, amending his Saturday remark about Duffy platooning at second with left-handed-batting Joe Panik.
Bochy added that Duffy -- the Giants' No. 18 overall prospect -- occasionally will fill in at shortstop and third base to rest Brandon Crawford and Pablo Sandoval, respectively.
"He had a terrific year in a tough league to hit. We'll try to keep him sharp," Bochy said of Duffy, 23.
Second base has been the Giants' most unstable position this season. Duffy became the seventh player to start there, joining Panik, Brandon Hicks, Ehire Adrianza, Joaquin Arias, Dan Uggla and Marco Scutaro. By comparison, the Giants have started six first basemen, four left fielders, four center fielders, three shortstops, three catchers, two third basemen and one right fielder.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.