Looks like BOWLER - one who will deliver an over, is the Derby part of the clue from the name of a Bowler hat in the USA?
7d Before heading to Leeds look here for fuel (3) O-L. This must be OIL... but why... Before Heading to Leeds is why the last letter is L, but look here.. it that 'OI'?
17 d Go off the best solicitor in the business (5,3) -T--- O-T This must be START OUT and solicitor is 'TART? But I can't see the rest of the clue to parse.
22a Wife taken in by Romeo with a place abroad (6) --A-D- This must be RWANDA, but I can't see why Romeo?