In-form striker Robbie, skipper in Ledley King's absence, limped off at the end of the first half of the 1-0 win against Bolton with an ankle injury and was replaced at half-time by Lee Barnard.
Meanwhile midfielder Danny, starting in place of suspended Edgar Davids, suffered from cramp as he stretched for the ball late in the game and had to be substituted.
"We had our problems again," said Head Coach Martin at the Lane. "Ledley was out, Jermaine Jenas was out, Edgar was out, Mido was out and then Robbie Keane came off - maybe people thought I'd substituted him but he had to come off with an ankle injury.
"Hopefully he will be alright for next week but it's a worry.
"Danny will be fine. It was cramp and he took a kick as well but I think he will be okay."
Martin Jol says Robbie Keane is 'a worry' for our Premiership finale at West Ham next Sunday but expects Danny Murphy to be okay.