And he believes the Wildcat offense has likewise sputtered because of lack of use.
Last season, Williams ran for 1,121 yards, the Dolphins ranked fourth in the NFL in rushing. This season, they're 18th.
"I don't think we've done it enough," Williams said Wednesday during a conference call with New York media. "Last year, we ran it for 100 yards several times, and it was because we were running the ball. Whether we're getting down in games or coach likes the passing game plan, we just haven't run the ball enough."
Williams said the situation's the same with the Wildcat. Last season, the package featuring Brown and Williams averaged 4.7 yards per play and 28 per game; this season, the averages are 3.0 per play and 12 per game.
"We just haven't run it enough," Williams said. "I don't think we've called it enough in games. I don't think we've run it enough and worked on it in practice enough to make it a big part of our offense."
Williams himself remains productive at age 33. As Brown's backup, he has averaged 45 rushing yards per game and 4.5 per carry. The latter figure is higher than his career average of 4.1.
Williams is undecided about whether or not he'll return in 2011.
"I'll be a free agent after this year," he said. "I'll be 34 next year. It's kind of wait and see. If someone wants me and they can convince me to do this one more year, I'll definitely have the opportunity. If not, I'm happy with what I've been able to accomplish in my career."
Williams has been with the Dolphins since 2002, longer than any other player on the roster. His longevity is a surprise, considering he retired for a season in 2004 and played in only one NFL game in 2006 and '07, when he served a suspension for violating the league's drug program.
Copyright 2010 by The Associated Press