FOXBORO, Mass. -- Ty Law's foot injury could not have come at a worse time for the New England Patriots.

Patriots coach Bill Belichick confirmed Wednesday that Law will not play Sunday against the St. Louis Rams, and a representative for the Pro Bowl cornerback said he'll miss four to six weeks with a broken bone in his left foot.

That leaves New England without either of its starting cornerbacks against one of the league's top passing attacks. Cornerback Tyrone Poole said Wednesday that, while his injured knee is healing faster than expected, he would also be out against St. Louis.

Law was hurt in the first quarter of Sunday's 34-20 loss to the Pittsburgh Steelers, and he did not return to the game that ended the Patriots' 21-game winning streak.

"Ty will be out of the game," Belichick said. "He definitely won't play."

Kevin Poston, the brother and business partner of Law's agent, Carl Poston, said that a team doctor diagnosed the injury, but Law will seek a second opinion for the broken bone across the top of his foot.