The American League single-season errorless streak record for a second baseman is held by Placido Polanco, who went 141 games without a miscue in 2007 for the Tigers.
"When I was younger, I always thought that defense was my weakness, so I put a lot of effort into working on it and getting as solid as I could," Barney said.
This is his second full season as a second baseman, and he's worked on making the transition from shortstop.
"We came in with a plan to fix some things and the plays I had trouble with, and we've secured that up," Barney said.
Barney's 113-game errorless streak at second base spans 910 1/3 innings since his only 2012 miscue at second base, April 17 in Miami. Hall of Famer Ryne Sandberg held the previous Cubs single-season mark of 90 straight games without a miscue at second from June 21, 1989, through the end of the season. Sandberg's streak was part of his franchise record 123-game errorless stretch that ran through May 17, 1990.
On Tuesday, Barney helped turn a double play in the first, and caught Ryan Braun's pop up in the sixth. The second baseman also was part of a rundown in the eighth that led to a Brewers run.