Possible Clues:

• Like an unchallenged receiver
• Uncertain as to outcome, ordinary writer after extra
• Having no restrictions (2 words)
• Exposed to attack
• The Dixie Chick's kind of spaces
• Available for a pass
• Vulnerable to attack (colloq.)
• Vulnerable
• Vulnerable to attack, with unpredictable outcome
• Lawless, like the Wild West