Possible Clues:

• Quickly produce series at a higher level
• Hoist in preparation for delivery
• Trip over in bowler's approach
• Raise a flag at college after work
• With narrowest of leads in cricket match, build hastily
• Incur (debts)
• Period preceding an important event
• Increase, as a bill
• Manage at university to make approach
• Incur, as charges ... or a hint to this puzzle's indicated letters