O'Connor out of Lions test
Morton will be without striker Garry O'Connor against Livingston.
O'Connor, who was heavily criticised for his level of fitness by club chairman Douglas Rae this week, is nursing an Achilles injury.
The Greenock side have to win to stave off relegation and their chances will not be helped by the added absence of Ben Sampayo (knee), Reece Hands (groin) and David O'Brien (hamstring).
"Winning 3-0 over Dumbarton in midweek has given everyone a terrific lift," said Morton manager Kenny Shiels. "We had been playing well for a few games now but without ever getting the results we were due.
"That changed against Dumbarton and hopefully we can do the same against Livingston and continue to look at ending the season positively."
Livingston look set to be without club captain Simon Mensing (ankle) as the Lions look to get back into the play-off race by winning at Cappielow.
Ross Docherty (groin) and Andrew Barrowman (hamstring) are also on the sidelines along with the suspended Jason Talbot, while former Morton player Michal Habai is a major injury doubt.
"Morton's confidence will have taken a boost from winning in midweek but we have to win to keep our play-off chances going," said Livingston boss John McGlynn.
"We lost 2-1 to Dumbarton last weekend as we never killed them off when we were ahead. Hopefully we have learned a lesson."