2013: Baseball's Year Of The Defense
As can be seen easily on the wonderful baseball-reference.com, the .985 collective mark this season edges out the previous high of .984 (acheived in 2007, 2008 and 2009). The rate of errors per game is also the best in baseball history, at 0.57 (previous best was 0.59 in 2009).
Overall, with defensive shifts helping to aid teams like the Rays and Pirates and the defenders becoming more and more sure-handed, it's safe to say we're in an era where glove-work is pretty stout.
Source: Matt Snyder, CBS Sports