With Trent Green shaking off the after-effects of his Week One concussion, the chatter at Kansas City Chiefs headquarters has swirled around the health of their quarterback, but they also have injury concerns along their offensive line.

During the first quarter of the Chiefs’ 31-17 victory Sunday over the St. Louis Rams, a defender rolled into the right leg of left guard Brian Waters, an offensive centerpiece who has made the last two Pro Bowls. During his Tuesday press conference, Chiefs head coach Herm Edwards said Waters would miss at least one week because of a sprained knee. Chris Bober, who replaced Waters last week, will start in his place.

“He played good when he was in the game,” Edwards said. “So he’s going to play.”

The play of the offensive line has served as a question mark since Willie Roaf retired before training camp. After mixing and matching players in his absence, the Chiefs finally found an effective lineup in their 41-0 Week Three victory over the San Francisco 49ers, starting Jordan Black at left tackle, Waters at left guard, Casey Wiegmann at center, Will Shields at right guard and Kevin Sampson at right tackle. That grouping remained intact until Sampson missed last Sunday’s game due to a foot injury.

Kyle Turley, who began the season as the starting left tackle until injuring his back after Week Two, replaced Sampson. Having practiced against stalwart Rams defensive end Leonard Little during his 2003 season with the Rams, Turley used that expertise to his advantage.

“He felt very comfortable,” Edwards said. “It was an athletic battle for the most part – you’re talking about two athletic guys. Little is not a power rusher. He’s a speed guy. That was a good matchup for us.”

John Welbourn, who played for the first time this season after missing six games for violating the NFL drug policy, did not fare as well. He allowed two sacks by Little while rotating in for Turley.

“He put in a pretty good effort,” Edwards said. “But obviously he’s a little rusty.”

The play of the offensive line should be a determining factor in Sunday’s game against the Miami Dolphins. Defensive end Jason Taylor has eight sacks this season.

Having faced Taylor twice a year during his tenure as New York Jets head coach, Edwards is familiar with the four-time Pro Bowler.

“No. 99 is a tough guy to block,” Edward said. “He’s a factor. There’s no doubt about it. He can get to the quarterback. He can raise havoc.”

The 5-3 Chiefs enter the game against the 2-6 Dolphins as heavy favorites, but need a win to keep pace in the competitive AFC West. The Denver Broncos and San Diego Chargers sit atop the division with 6-2 records.

“They’re winning, and we’ve got to continue to win,” Edwards said. “That’s how you like it. You like it hot. You like every game to be an important game.”