Text of MLB obstruction rule cited in World Series - The San Diego Union-Tribune
A look at MLB's obstruction rule - The Boston Globe
Rule Quiz of the Week: Obstruction by a Pitcher | SportsEngine
MLB umpires still struggling to interpret home plate collision rule correctly - Sports Illustrated
Defining Interference and Obstruction - Little League
World Series obstruction: Did the umps make the right call on the crazy play that ended Game 3?
Old Acts, New Rulings - Referee.com
How the obstruction rule change affects plays at home | Softball rules, Rules, Obstruction
Secretary rules-editor confirms, explains why obstruction was correct call in WCWS Finals Game One
Was Obstruction the Right Call to Make on Wild Last Play of Game 3? | Bleacher Report | Latest News, Videos and Highlights
What is baseball's obstruction rule? - Missourinet
Baseball Rules Academy: So Explain This Obstruction Call — Inside the Seams
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Cardinals vs. Red Sox: Here's the obstruction rule you're looking for - Viva El Birdos
One day later, John Farrell objects more to obstruction rule than obstruction call
Baseball Rules Academy: It's Interference, Never Call It Obstruction Again — Inside the Seams
obstruction
ASA Softball Rules on Obstruction
Interference and Obstruction Rulings
MLB plans to review obstruction rule - CBSSports.com
7.06 Obstruction - Baseball Rules Academy
Inside Pitch: A Club Coach Whose Daughter Was Injured Issues Call to “Get the Obstruction Rule Right!” - Extra Inning Softball
More on Rule 7.06, Obstruction - MLB | NBC Sports
Blocking the plate - Wikipedia
Baseball Rules - Obstruction vs. Interference
The MLB obstruction rule that ended Game 3 | For The Win
MLB obstruction rule: Explaining Cardinals' freak Game 3 win - SBNation.com
Softball Panel Approves Changes To NCAA Obstruction Rule - FloSoftball
