Barney played in his 141st consecutive errorless game to tie the single-season Major League record by a second baseman, set in 2007 by the Tigers' Placido Polanco.
Barney is rewriting the National League mark each game, as he has long surpassed the old record of 123 games, held by Hall of Famer Ryne Sandberg, who was Barney's former Minor League manager. Barney saved a ball from his 124th game, and now has one from Thursday's contest.
"They're good mementos, and a sign of the hard work we've done on the defensive side," Barney said.
Barney leads all NL second basemen in fielding percentage [.999] and has made one error this season. His errorless streak is now 1,147 1/3 innings.
His streak survived rainy weather in the first two games of the Cubs' series against the Rockies. On Thursday, he turned a nifty double play in the second without fear.
"None of that is on my mind until it happens I guess," Barney said of the streak. "With [first baseman Anthony] Rizzo over there, you feel comfortable making throws no matter what. It's not really on my mind."