Cardinals vs Red Sox live stream: Watch online free Game 3 World Series Saturday 8:00 ET as 1-1 series shifts to St. Louis for the next three.

Watch the free live stream online of the Red Sox vs Cardinals World Series game 3 comes to St. Louis, which is where the Cards are 5-1 this postseason. They are coming off a 4-2 victory in Boston Thursday to put the home-field advantage in their favor.

The pitching matchup for game 3 of the World Series is Joe Kelly for the Cardinals vs Jake Peavy for the Red Sox. Watch the free live stream online of a game that could be a pitching-duel or a shootout. Kelly told MLB.com that the Bush Stadium crowd will play a difference in the series.

"The main difference is the crowd, the fans," Kelly said. "In the postseason, every strike is huge. Every out is huge. Every hit we get is big, even if we don't score."

The right-hander has a 3.75 ERA through 24 postseason innings (three starts, seven relief appearances).

While his opponent, Jake Peavy, held the Rays to one run in 5 2/3 innings in the American League Division Series, overall, he's 0-3 with a 10.31 ERA in four career postseason starts. He said he's ready to pitch in the World Series.

"There are absolutely no excuses [Saturday] night," Peavy told MLB.com. "This is what I lived my whole life for. I'm as prepared as I'll ever be, physically and mentally."

Yadier Molina admires Peavy and has so for years. The Cardinals catcher and great hitter compared Peavy to the man he'll be catching for Saturday night.

"I haven't faced Peavy in many years," Molina said. "He was nasty then. When I was younger, he was one of the pitchers I admired most. He really knew how to pitch. Kelly, like I've said many times, our young guys aren't scared. They're going to go after people. Kelly has the power sinker with the big curveball. If he makes his pitches, we're going to be fine."

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