INDIANAPOLIS (AP) -- The Indianapolis Colts have a message for

the NFL: The Triplets are back and better than ever.

Not to mention still perfect.

For the second straight week, Peyton Manning threw three

touchdowns and Marvin Harrison and Edgerrin James each topped 100

yards, helping the Colts retain their title as the NFL's only

unbeaten team with Sunday's 31-17 victory over Houston.

"In this offense, it can be anyone's day," said Manning, the

league's two-time MVP. "But when you see it on film, we do spread

it around. ... It can put the defense in a bind."

As if the Texans (1-8) weren't already overmatched, playing the

league's hottest team with a makeshift offensive line and missing

their top running back.

Manning carved up the Texans secondary, completing 26 of 35

passes for 297 yards and three TDs. Harrison caught seven passes

for 108 yards, including a 30-yard TD pass that made Manning and

Harrison the first duo in NFL history to account for 10,000 yards.

The tandem now has 755 completions for 10,034 yards and 90

touchdowns -- all NFL records.

James, too, had a milestone day. He carried 26 times for 122

yards -- his 47th career 100-yard game, tying him with Pittsburgh's

Franco Harris for the eighth most in league history -- while topping

1,000 yards for the fifth time in his career.

It also marked the 21st time James and Harrison accounted for

100 yards in the same game, breaking the NFL record of 20. The

record previously belong to Dallas' Emmitt Smith and Michael Irvin.

And the trio made Houston look bad all day.

"They have so many weapons, you just can't let up," linebacker

Antwan Peek said of Manning. "But it's tough to stop them all."

This victory, though, didn't follow the usual script for the

Colts (9-0).

Coach Tony Dungy worried all week about his team's response to

an emotional Monday night victory at New England, and at times,

Indianapolis had problems.

Twice they muffed short punts when the ball hit blockers running

down field. Houston turned those miscues into 10 points, keeping it

closer than most people expected.

But Manning & Co. answered every challenge as Houston dropped to

0-8 all-time against Indy.

"I thought our guys played well," Dungy said. "We had a few

glitches on the punts, but there's not really anything you could do

about that."

On paper, it looked like a mismatch -- and that was long before

the Texans put running back Domanick Davis (knee), offensive

linemen Zach Wiegert (ankle), Drew Hodgdon (sprained arch) and Todd

Washington (neck) on the inactive list.

Coach Dom Capers improvised. He moved offensive lineman around,

then had to make another adjustment when right tackle Todd Wade

sprained a knee ligament in the fourth quarter. Capers called both

Wade's injury and safety Jason Simmons' pulled hamstring

significant.

The rash of injuries also included defensive tackle Gary Walker,

who limped off the field once and later returned.

"It looks like we can't play a game without losing someone,"

Capers said.

Indianapolis took advantage.

They limited Houston to only two first downs, one by penalty in

the game's first 27 minutes.

Manning led the Colts on three straight touchdown drives,

throwing 14 yards to Dallas Clark for one score, getting a 5-yard

TD run from James and then connecting with Brandon Stokley on a

21-yard touchdown pass that made it 21-0 midway through the second

quarter.

Houston got back in the game when Ramon Walker recovered the

first muff and Jonathan Wells, Davis' replacement, scored on a

nifty 14-yard run as he stretched across the goal line. Wells

finished with 15 carries for 58 yards.

The Texans made it 21-14 on the opening possession of the second

half when David Carr threw a 13-yard TD pass to Jabar Gaffney. Carr

was 16-of-25 for 138 yards and was sacked three times.

But Manning countered with the 30-yard TD pass to Harrison, and

Houston never challenged after that.

"Peyton threw for a high percentage again," Dungy said. "We

ran the ball well. That's what we've been doing all year in the

right situation _ making plays."

Game notes
Colts defensive end Robert Mathis failed to record a

sack for the first time this season, ending his consecutive games

streak at eight. ... Carr threw a touchdown pass in his ninth

straight game, a career-high. ... Harrison's 50th career 100-yard

game tied Don Maynard for second on the all-time list. Jerry Rice's

76 100-yard games are an NFL record.