Related Clues:

• Certain pitch
• Bend
• Arch
• Tricky pitch
• Pinup feature
• Line on a graph
• It might prevent failures
• Batter's challenge
• Batter's challenge, perhaps
• Hard-to-hit pitch
• Ball that breaks
• Parabola
• Road bend
• Parabola, e.g.
• Reason for slowing down