I've battled my way through this puzzle, but can't quite parse the last two across clues. They are:-
57 Across - "Arrive earlier than partner, gutted by online assignation?
PREDATE?
58 Across - "Flamboyant winger and token supporter of match.
BEST MAN?
I can't see any alternatives to these answers, but the "best man" and "online assignation" connections elude me at present.