Possible Clues:

• Reliable man leaving leader out of practice
• Out of practice in game, starts to seem tired, yawning
• Behind the times, firm's head is dismissed
• Affected by corrosion - out of practice
• Soundgarden "___ Cage"
• Impaired through lack of use
• Are you dirty in decay?
• Out of practice, privileged convict loses his head
• Reliable? Not initially, being out of practice
• Condition of a boxer after a long lay-off