Eoin Morgan insists England are not at World Cup "panic stations" after injury scares for himself and Jason Roy.
Captain Morgan stood for his post-match press conference, so uncomfortable was the suspected back spasm that ruled him out of the majority of England's eight-wicket win over the West Indies.
Opening batsman Roy also hobbled out of the action with a hamstring complaint, leaving England facing a nervous wait over fitness updates on two key performers.
Joe Root's second century of the World Cup steered England easily to their 213 victory target, but Morgan admitted both he and Roy are injury doubts for Tuesday's Afghanistan clash at Old Trafford.
Asked about his own injury issue, Morgan said: "It's sore. I've had back spasms before and usually it only takes a few days to settle down.
"It's unclear at the moment, but we'll know more in the next 24 hours.
"This is in a different area (from previous back spasms). You normally get a good indication the following day.
"If it settles down, the improvement is the following day and then it gets better."
On Roy's situation, Morgan continued: "I don't know how he'll pull up tomorrow.
"He'll go for a scan tomorrow and it will be 48 hours before we have a result.
"When any two players go down it is a bit of a worry.
"But it's not panic stations or anything yet, we'll just see how we go in the next 48 hours and go from there."
Asked if he would be ready to face Afghanistan in Manchester on Tuesday, Morgan added: "I don't know. Like everybody, we'll have to see how it pulls up.
"We'll do a risk assessment and see how risky it is going into that game, because there's another game that follows quickly."