Possible Clues:

• Pinch
• Sudden sharp feeling
• Emotional pang among left-wingers
• Put another way, get over win that causes spasm
• Pain, note, round one side
• Left-winger's short-lived pain
• Cord trousers good for pain
• Perhaps cramp lookalike, say, heading west
• After match, get endless sharp pain
• Lookalike finally suffering unwelcome stabbing pain