Possible Clues:

• Physician flipping cross about cold temperature
• GP, e.g.
• Tamper with entrance outside court
• Falsify, adulterate
• Cook rhubarb with fish? That's revolutionary
• Edit dishonestly
• Part of JD
• Professional indoor court
• Who on TV, with "the"
• Collecting boundaries in cricket, opener W. G. Grace, perhaps?