Ayr United 0-1 Arbroath
Ayr United goalkeeper Graeme Smith saved two penalties but could not prevent his side from losing to play-off hopefuls Arbroath.
The visitors retain fourth place, one point ahead of Forfar Athletic, who also won 3-0 away to Stranraer.
Arbroath made a strong start to the match and should have taken the lead in the 17th minute when they were awarded a penalty for Neil McGregor's foul on Graham Bayne.
But Smith produced a wonderful save to deny Steven Doris from the spot.
Arbroath were awarded a second penalty in the 56th minute when Jackson Longridge handled in the area, but Paul Sheerin's penalty was well saved by Smith.
The Red Lichties finally took the lead in the 60th minute when Euan Smith got on the end of Daniel Rennie's cross to head home from close range.
Ayr pushed for an equaliser in the closing stages, but Arbroath held on to take all three points.
Ayr: Graeme Smith, McAusland, McGregor, Brownlie, Longridge, Wyllie (Wardrobe 72), McLaughlin, Crawford, Donald, Moffat (Nisbet 59), Marenghi (Roberts 65). Subs Not Used: Brown, McCann.
Booked: Crawford, McGregor.
Arbroath: Bullock, Banjo, Travis, Keddie, Hamilton, Euan Smith, Sibanda (Rennie 50), Chisholm, Sheerin, Bayne (Patrick Smith 90), Doris (Holmes 50). Subs Not Used: Gray, Malcolm.
Goals: Euan Smith 60.
Ref: Greg Aitken