Dumbarton manager Ian Murray has been able to include Jordan Kirkpatrick and Chris Turner in his plans to face leaders Hamilton.
The duo have shaken off knocks picked up in last Saturday's 2-1 defeat by Raith so Scott Agnew is the only absentee with a groin injury.
Murray said: "We were naive defensively against Raith and were punished for it. This is a tough game against a side that have been top virtually all season and they will punish us if we do not tighten up.
"They beat us 4-1 earlier in the season and I want a better contest this time."
Hamilton have Michael Devlin and Stephen Hendrie available to face the Sons.
But Jon Routledge is still suffering from a knee problem while a stomach muscle injury continues to keep player-manager Alex Neil on the touchline.
Neil said: "We have moved back into top spot which is good, however we have not won in four games and it is time for that to change. It will not be easy as Dumbarton play a lot of good football.
"Being top gives you confidence and a psychological edge and the best way to keep that is by winning your games."