To go a bit further, let's just say that the best defense saves 1.5 singles per game. At 0.5 runs per game saved, that's a fair number because for all intents and purposes, home runs do not count on defense and they're the only way to get one run from a single plate appearance. So to average half a run, you're going to need a bit more than a single. In 2014, the Kansas City Royals gave up 1386 hits, good for fifth best in the AL. So we'll add 234 hits to the Royals' 2014 total, saying they had the worst defense in the league (instead of the best). That puts them at 1620 hits for the season. In 2014, the Minnesota Twins gave up the most hits in the AL at 1588. These hypothetical Royals would have given up 1/4 of a hit more per game than the 2014 Twins, making them the worst in the AL by a healthy margin. These numbers just don't make any sense and this is using (admittedly rough) math based on giving up just half a run more per game. Some of you are voting for one full run a game, or double that number. Then we get into situations where defense has no impact whatsoever. Say a pitcher walks a guy, gives up a line drive that no defender on the planet could catch, and then serves up a homer. That is a pretty common scenario in baseball. Three runs. The defense had zero ability to counteract any of those runs. Once we start whittling away at the scenarios where the defense could not positively nor negatively affect the outcome of runs being scored, the numbers go into insane WTF ludicrous territory. Defense is important. It saves runs... but these numbers don't make a lick of sense if you take a moment to apply common sense to the metrics.