A look at MLB's obstruction rule - The Boston Globe
MLB plans to review obstruction rule - CBSSports.com
World Series obstruction: Did the umps make the right call on the crazy play that ended Game 3?
Obstruction Play During Little League Rundown or How to Ruin a Pickle Without Really Trying - YouTube
OAK@LAA: Melvin protests in 9th after obstruction - YouTube
Close Call Sports & Umpire Ejection Fantasy League: Rule 6.01(h)(1) and (2): Obstruction, What a Pickle!
Interference and Obstruction Rulings
MLB obstruction rule: Explaining Cardinals' freak Game 3 win - SBNation.com
Obstruction or Interference? You make the call - baseball rules. - YouTube
Baseball Rules Academy: It's Interference, Never Call It Obstruction Again — Inside the Seams
What is baseball's obstruction rule? - Missourinet
ASA Softball Rules on Obstruction
Secretary rules-editor confirms, explains why obstruction was correct call in WCWS Finals Game One
Obstruction Deduction - Referee.com
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/21839215/185982367.0.jpg "Cardinals vs. Red Sox: Here's the obstruction rule you're looking for - Viva El Birdos")
Cardinals vs. Red Sox: Here's the obstruction rule you're looking for - Viva El Birdos
Softball Panel Approves Changes To NCAA Obstruction Rule - FloSoftball
The MLB obstruction rule that ended Game 3 | For The Win
Text of MLB obstruction rule cited in World Series - The San Diego Union-Tribune
What's the obstruction rule in baseball? | HowStuffWorks
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/21838963/interfe1.0.jpg "MLB obstruction rule: Explaining Cardinals' freak Game 3 win - SBNation.com")
MLB obstruction rule: Explaining Cardinals' freak Game 3 win - SBNation.com
MLB umpires still struggling to interpret home plate collision rule correctly - Sports Illustrated
Baseball Rules Academy: So Explain This Obstruction Call — Inside the Seams
