New York Giants defensive end Osi Umenyiora, the two-time Pro Bowler who missed last season with a knee injury, participated in the team's voluntary workout yesterday and declared himself healthy and ready to go.

After months of rehabilitation, Umenyiora said his body feels great.

"But football shape is different than regular shape," he added. "I still feel like I'm one of the best, if not the best, defensive end in football right now. I feel quick. I feel explosive. I don't feel like I should be stopped one-on-one."

Umenyiora earned his second Pro Bowl berth and helped the Giants win the Super Bowl in 2007 by recording 13 sacks, including six in a game against the Eagles.

Chiefs. After saying he wanted to be traded and skipping new coach Todd Haley's voluntary workouts this spring, pro Bowl guard Brian Waters showed up for the first day of Kansas City's mandatory minicamp yesterday.

Waters had complained that he was mistreated in meeting with Haley, and that new general manager Scott Pioli refused to meet with him.

"I'm glad to be here with my teammates," Waters said.

Colts. Quarterback Peyton Manning may not have all the answers about the Colts' coaching staff, but at least now he's on the same page as management.

Ten days after complaining about a lack of communication with the front office, the Colts' franchise quarterback said he now understands Indianapolis' plan.

The team will be guided by Jim Caldwell, who replaced the popular Tony Dungee.

"I feel like I have a good grasp of what's going on right now in terms of who's here," Manning said.

In other Colts news, kicker Adam Vinatieri had surgery on his right hip but is expected to be ready for the start of the regular season.

Bills. Injuries could force Bills starting cornerbacks Terrence McGee and Leodis McKelvin to miss the team's remaining four spring minicamp practices, which will take place next week.

McGee has been out since hurting his right shoulder on May 27. McKelvin also has been out since May 27 because of an infection to his middle right finger.

Falcons. Atlanta signed cornerback William Middleton, its fifth-round draft pick, and defensive tackle Vance Walker, its seventh-round selection.