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Roger Clemens will get another chance to pitch this season. Whether it comes in the NL championship series or in the World Series, that might depend on Pete Munro. With the Houston Astros (search) leading St. Louis 3-2, manager Phil Garner picked Munro to start Game 6 Wednesday against the Cardinals (search).

"There are going to be a lot of people saying do the opposite, start Roger," Garner said Tuesday. "But what I feel in my gut is what I have to do."

Garner considered the options — the Rocket on three days' rest vs. a journeyman hit hard last week — and made his choice. Munro was told on the team's afternoon flight to St. Louis.

"I guess I was kind of overwhelmed," Munro said. "I'm sure that they'd rather face me than Roger. I mean, I'd rather face me than Roger."

Instead, Clemens will be held back for a possible Game 7 Thursday night. Or maybe a start in the World Series (search) opener Saturday night.

Garner could have lined up Clemens and Roy Oswalt to face the Cardinals, bringing both back early in hopes of putting Houston into its first World Series.

But the stats aren't good: Since five-man rotations became popular, pitchers on three days' rest lose about three times more than they win in the postseason.

During the first round against Atlanta, Clemens pitched on three days' rest for the first time since April 11, 2002. He hung in for five innings, allowing two runs.

"I think it's false to assume that just because you're going to bring Roger back that you're sure to win," Garner said. "Because I'm starting Pete doesn't mean we're giving this game away."

After losing three straight games, the Cardinals assumed they'd be facing Clemens.

"I saw some controversy in the paper, but I kind of think he'll pitch," third baseman Scott Rolen said earlier Tuesday. "I think we all think he'll pitch and then we'll have Oswalt in Game 7, hopefully."

Added Game 6 starter Matt Morris: "Obviously, our position players might rather face Pete Munro rather than a Roger Clemens. We know his capabilities. Although, taking nothing away from Pete."

A day before, the 42-year-old Clemens said he was set. He won Game 3, going seven innings.

"I'll be ready to go whenever he wants to hand me the ball," he said.

Coming off one of the best and most unlikely pitching duels in playoff history, it was hard to know what to expect. The teams totaled just four hits - a postseason record - on Monday night, with Brandon Backe and the Astros beating Woody Williams and the Cardinals 3-0.

Jeff Kent's three-run homer off Jason Isringhausen in the ninth inning won that matchup at Minute Maid Park. The clubs have combined for 20 home runs so far, three off the NLCS record set last year by Florida and the Cubs.

"We're as likely to have a 10-8 game as a 2-1 game," Garner said.

It was right in the middle - 6-4, St. Louis - when Morris and Munro matched up in Game 2. Each gave up three runs and six hits, with Munro lasting 4 2-3 innings and Morris going five.

Munro started the season at Triple-A for Minnesota, was signed by Houston in June and demoted to the minors. He went 4-7 with a 5.15 ERA for the Astros, and has a 13-19 career mark in the majors.

"I've been underestimated my whole life, when it comes to baseball," Munro said. "That they went with me is amazing to me.

"I think in any other circumstance, if Roger had four days off, he'd definitely be the guy to take the bump. This isn't a must-win. I think they wanted to give Roger an extra day. If we'd lost last night, I guess they'd go with Roger."

Garner said he weighed all sorts of factors for a while.

"I thought about it for quite a bit. The process was a day or two. And then you sit around and you think a little bit more," he said. "I think you can overthink it, you can see all kinds of scenarios.

"Asking Roger to come back on short days two of three starts, I'm not sure if that's the right move. All things considered, I think it's best to let him pitch on his fifth day."

The Cardinals aren't looking forward to Game 7, not yet. After leading the majors with 105 victories, the NL Central champions will go a day at a time against the wild-card Astros.

"Well, we actually practiced this game over six months," manager Tony La Russa said. "A lot times when we are in a series, we would tell ourselves we're in the seventh game of the World Series.

"A lot of times if you don't win a bunch of series, you don't get to October. So we put the must-win situation on ourselves a bunch of times."