What does OB stand for in common Frisbee terminology?

• A. Out-of-bounds
• B. On-base
• C. Offense
• D. Overbounds

Answer: (A)

Out-of-bounds is the shorthand used in Frisbee to indicate the disc has left the playing field or landed outside the boundary lines. The field is defined by sideline and end lines; when any part of the disc crosses or touches the ground outside these boundaries, it’s OB. When that happens, possession typically goes to the defense at the spot where the disc went OB, which is why players focus on where the boundary lines are. The other terms don’t fit Frisbee jargon: on-base is a baseball phrase; offense is a general team designation, not a boundary term; overbounds isn’t a standard Frisbee term.