7 Umpire Signals Every Baseball Fan Needs to Know – Scout Life magazine
Baseball rule help: a baseball that passes the base in fair territory is considered fair, but a ball that lands foul is foul. What's the call on a ball that follows this
New Foul Tip Definition Short - Real-Life Example of a Baseball Rules Change - YouTube
Frank Deford: The origin of fair and foul balls in baseball - Sports Illustrated
Baseball Rules fair foul ball - YouTube
Watch: New York Yankees' Gary Sanchez hit in groin with foul tip - UPI.com