How often does a bad throw occur that's not called an error but costs the defensive team a base? An example would be a base hit with a man on first. The runner goes to third, the outfielder attempts to nail him, but comes up short, allowing the batter to get to second. This is not ruled an error, but Baseball Info Solutions categorizes this as a defensive misplay. This play, and eight other similar throwing misplays tracked by BIS that cost the defense at least one base but are not ruled as errors, occur about once per game. Quite often.
Here is a complete list of throwing misplays by team for 2006 (through August 20).
| Team | Throwing Misplays |
| St. Louis Cardinals | 37 |
| Boston Red Sox | 42 |
| Seattle Mariners | 44 |
| Arizona D'Backs | 44 |
| Houston Astros | 45 |
| Minnesota Twins | 51 |
| Oakland A's | 52 |
| San Francisco Giants | 53 |
| Texas Rangers | 55 |
| San Diego Padres | 55 |
| Colorado Rockies | 55 |
| Detroit Tigers | 56 |
| Cleveland Indians | 56 |
| New York Yankees | 59 |
| Tampa Bay D'Rays | 60 |
| Kansas City Royals | 61 |
| Los Angeles Angels | 63 |
| Baltimore Orioles | 64 |
| Philadelphia Phillies | 65 |
| Toronto Blue Jays | 68 |
| Chicago Cubs | 69 |
| New York Mets | 69 |
| Atlanta Braves | 70 |
| Pittsburgh Pirates | 70 |
| Chicago White Sox | 71 |
| Washington Nationals | 73 |
| Cincinnati Reds | 74 |
| Florida Marlins | 75 |
| Milwaukee Brewers | 76 |
| Los Angeles Dodgers | 78 |
The Cardinals demonstrate good throwing fundamentals while the defending World Champion White Sox are last among American League teams. White Sox outfielders also have the fewest baserunner kills in the American League with only six thus far on the season. Ozzie Guillen's follow-up class to his "Bunting School" may be "Throwing School."