Bolton Wanderers manager Sam Allardyce was satisfied with Nicolas Anelka's debut in Saturday's 1-0 victory against Watford.
The Frenchman was making his first appearance for Bolton since his £8million switch from Fenerbahce last month and had to be substituted with 20 minutes left.
However, Allardyce told the club's official website: "He came off with tired calf muscles and we didn't want to risk him any further.
"I'm happy with what he did - I knew he was short of match practice but he showed flashes of what he can do.
"In fairness to him, he was woefully short of the right sort of service. He will be disappointed with his finishing because he didn't hit the target.
"But he swivelled on one and made the keeper pull off what was a really good save."