MLB - Inside the 2013 World Series obstruction call - ESPN
Baseball rules runner interference
Thinking Outside the Box
Obstruction is When a Fielder Without the Ball Obstructs a Runner - Baseball Rules Academy
Baseball rules runner interference
Out or Safe? Was there an obstruction? : r/baseball
Old Acts, New Rulings
rules-the-dugout
Blocking the plate - Wikipedia
Baseball Interference Rules
Guccione, Chris - Umpire Ejection Fantasy League Portal
Obstruction? Interference? Nothing? You Make the Call!
Runner Interference? You make the call.
Can a Fielder Block a Base? - Baseball Rules Academy
Type 2 Obstruction Fielder No Longer In the Act of Fielding