FC Halifax Town face the first of a crucial double-header when they travel to second-placed Kidderminster on Saturday (3pm).
The Shaymen then travel to eighth-placed Brackley on Tuesday, with their play-off hopes potentially looking either very good or very bad by Wednesday morning.
Town boss Billy Heath says it will be “tough and go” whether Dion Charles will recover from his calf injury in time for tomorrow’s game, but says Matty Kosylo will not be fit enough to play on Saturday or at Brackley on Tuesday.
Heath says Matty Brown is “way off” a return to the team, but said Josh Macdonald has returned to full training but would probably not be involved at Kidderminster.
The Harriers have won 14 out of 18 home league games this season, and have won their last 13 league games at home in a row, with their last defeat at Aggborough coming on October 22.
They have not conceded at home in four-and-a-half hours of football and have kept a clean sheet in six of their last seven home games.
They have the best defensive record in the National League North, and have only failed to score in two of their 23 home games this season.
They are six points behind leaders Fylde with a game in hand, but Town can move to within two points of them if they win.
If Town draw or lose, they could find themselves out of the top-five, with just one point separating them from seventh-placed Chorley.
Only Darlington and Fylde have scored more goals in the division than Halifax, who have won five of their last six away games.
Saturday’s National League North fixtures:
AFC Fylde v Darlington
AFC Telford United v Worcester City
Alfreton Town v Bradford Park Avenue
Brackley Town v Boston United
Chorley v Gainsborough Trinity
Curzon Ashton v Gloucester City
FC United of Manchester v Stalybridge Celtic
Kidderminster Harriers v FC Halifax Town
Salford City v Altrincham
Stockport County v Nuneaton Town
Tamworth v Harrogate Town