Kris Commons has played down fears of a spell on the sidelines.
Commons was withdrawn from the action in yesterday's 2-2 draw with Queens Park Rangers at Pride Park just before the half time break.
After feeling his hamstring tighten, he was immediately substituted as a precautionary measure to avoid further damage.
The 26-year-old missed large parts of last season with hamstring trouble and he is keen to avoid a repeat this time around.
He told dcfc.co.uk: "Having felt it (hamstring tighten) a few times last season and done more damage than good, it was important I came off straight away to avoid any problems.
"My hamstring was getting tighter and tighter, so it was precautionary to come off,
"It was one of those feelings I get when I'm not quite 100 percent.
"If I had carried on something serious could have happened, so I should only be out for a day or two."
Moments before being replaced, Commons had given Derby the lead with a well-taken goal.
He was a thorn in the Rangers backline, who were finding it hard to deal with the lively Scot.
"I am a little disappointed it has happened now because I hadn't felt anything (in the hamstring) throughout pre-season and in the games so far," said Commons.
"For some reason something triggered it off, maybe I'm coming down with a bug or I was dehydrated.
"I was disappointed because I felt I was causing them problems and I had just got a goal too. "
Commons could only look on as QPR hit back with two injury time goals to snatch a 2-2 draw, and he was adamant the Rams deserved to take all three points.
"We passed them off the park and perhaps our undoing was a little bit of inexperience," he said.
"We deserved to win; I don't think there is any doubt about that.
"There were a lot of strong points, especially playing a top Championship side and giving them a real game."
Commons expects to be fit and available for selection for Derby's next game, against Sheffield United on 11 September.
