World Series: What MLB rulebook says about bizarre interference call against Nationals' Trea Turner - CBSSports.com
Levelin' Up at Baseball Rules Academy - Redleg Nation
Close Call Sports & Umpire Ejection Fantasy League: Comparison - Infield Interference or Only Obstruction?
Defining Interference and Obstruction - Little League
Umpire Interference: An Easy Explanation – Baseball Training World
Interference and Obstruction Rulings
Baseball Rules Academy: So Explain This Obstruction Call — Inside the Seams
Blue Notes
Umpire Interference: An Easy Explanation – Baseball Training World
MLB - Inside the 2013 World Series obstruction call
Obstruction A's Automatic Base Award - YouTube
What is baseball's obstruction rule? - Missourinet
Defining Catcher's Interference - Little League
The Baseball Rules: What Happens to a Runner When One Is Hit by a Batted Ball?
More on Rule 7.06, Obstruction - MLB | NBC Sports
What is your call? Obstruction/Interference? Nothing? - YouTube
Fair Or Foul? Baseball Expands Use Of Instant Replay : The Two-Way : NPR
Baseball Rules - Obstruction vs. Interference
Cardinals walk off on obstruction call in Game 3 of the World Series - YouTube
Offensive Interference
World Series Game 3: Obstruction rule, correctly applied, creates controversy | Sporting News
Interference or Obstruction - YouTube
Follow Through Interference - Baseball Rules Academy
Was Obstruction the Right Call to Make on Wild Last Play of Game 3? | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
Obstruction in Softball - How does it work? (SIMPLIFIED)
