Ayr have Eddie Malone and Michael McGowan available after suspension to face Partick, but the former is a doubt after sustaining a hip injury.
Full-back Jonathan Tiffoney is expected to play against the Glasgow side despite an ankle knock, but Sean Higgins remains out.
After losing 2-1 to Queen of the South last week, manager Brian Reid is telling his men to get back into their disciplined ways.
He explained: "We have been a hard-working well-organised team all season but the opening half at Palmerston was disappointing.
"We lost two bad goals and we need to get back to ourselves quickly. We have had a good season but we don't want that to change at this crucial stage."
Partick were dealt a blow in the lead up to the game as midfielder David Rowson was ruled out with a hamstring injury.
Rowson joins the injured Darren Cole and Tommy Stewart on the sidelines, but Conrad Balatoni returns after a knock.
Jags boss Jackie McNamara is looking for his men to bounce back after two defeats in a row.
He said: "It was disappointing not to build on our 5-0 win over Queen of the South and to lose two games at home.
"We have to make teams work hard to score against us as in the last couple of weeks we have made it easy for them. Ayr will come out fighting for everything and we need to match that first and foremost."