Mexico shocked Brazil in the Olympic men's soccer final, winning gold 2-1, in a game in which it never trailed. Mexico's Oribe Peralta scored just 29 seconds into the game, after pouncing on a turnover to scorch a ball that tracked low and bounced to elude goalkeeper Gabriel.

The Romney campaign launched its first event with Ryan on the ticket in front of an excited crowd of supporters in Norfolk, Va., Saturday morning. If the crowd at the event was any indication, the decision has energized the Republican base.

It's been a big day for Mitt Romney's presidential campaign. Romney officially announced his running mate this morning in Virginia. NPR's Ron Elving tells guest host Linda Wertheimer how the pair are starting out.

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LINDA WERTHEIMER, HOST:

The top political news today: Mitt Romney, the likely Republican nominee for president named his running mate - Wisconsin Congressman Paul Ryan.

(SOUNDBITE OF SPEECH)

MITT ROMNEY: So Paul and I are beginning on a journey that will take us to every corner of America. We're offering a positive governing agenda that will lead to economic growth, to widespread, ensured prosperity, and that will improve the lives of our fellow citizens.

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LINDA WERTHEIMER, HOST:

Grover Norquist is the president of Americans for Tax Reform, which is an anti-tax advocacy group. He also organized the Taxpayer Protection Pledge, which is a commitment to vote against tax increases. That has become a standard element of Republican campaigns. Grover Norquist, welcome to our program.

GROVER NORQUIST: Linda, good to be with you.

WERTHEIMER: So are you happy with his choice of Paul Ryan?

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LINDA WERTHEIMER, HOST:

This is WEEKEND EDITION from NPR News. I'm Linda Wertheimer.

This morning in Norfolk, Virginia, Republican presidential candidate Mitt Romney announced his running mate, Wisconsin congressman Paul Ryan.

MITT ROMNEY: Paul Ryan works in Washington, but his roots remain firmly rooted in Janesville, Wisconsin.

(APPLAUSE)

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LINDA WERTHEIMER, HOST:

This is WEEKEND EDITION from NPR News. I'm Linda Wertheimer.

The Romney campaign is now the Romney-Ryan campaign. The newly minted Republican ticket was presented at an event in Norfolk, Virginia. Mitt Romney named Wisconsin congressman Paul Ryan as his running mate beside the aptly named USS Wisconsin. In his introduction of Ryan, he extolled the Midwestern virtues of the congressman.

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LINDA WERTHEIMER, HOST:

This is WEEKEND EDITION, from NPR News. I'm Linda Wertheimer. If you are just joining us, we're following a big announcement this morning. The Republican candidate, Mitt Romney, has chosen his running mate. Congressman Paul Ryan of Wisconsin will share the ticket. For more, I'm joined in the studio by our health policy correspondent, Julie Rovner.

Julie, hello.

JULIE ROVNER, BYLINE: Hello.