Antrim's hopes of promotion have been hit by a 1-12 0-12 defeat by Division Four leaders Carlow at Corrigan Park on Sunday.
Darragh Foley's goal proved to be the difference between the sides, firing past Chris Kerr on 58 minutes.
Stephen Beatty sent off for Antrim in the second half while CJ McGourty fired over points for the Ulster hosts.
Carlow have clinched promotion while Lenny Harbinson's side remain in third, three points off Laois in second.
The game was the only Division Four encounter to survive the weather, with Carlow taking a slender advantage at half-time, leading 0-06 to 0-04.
The Ulster hosts had captain Kevin O'Boyle black carded 15 minutes into the second half, before Beatty was red-carded moments after coming onto the field as a replacement.
Foley's goal put Carlow into a commanding position with a close-ranger finish into the net.
Antrim travel to Limerick next Sunday before finishing their league campaign against Laois in what has the potential to be a winner-takes-all encounter on 31 March.