Related Clues:

• Succeeds when it matters most
• Influences, as heartstrings
• Relatives of sprains
• Pulls on, as heartstrings
• Propels, as a rickshaw
• Draws most of the bar with two types of port on bender
• Competes in tug of war
• Yanks, as a pants leg
• Misjudges a push door
• Tugs, attracts