However, the 49ers did come within one game of backing up York's assertion.

Finally a guard stepped forward and backed up my assertion that the paintings were in the United States.

Lrrr makes a public statement backing up Fry's assertion.

Even officials at the Marines' public affairs office offered few statistics to back up the directive's assertion.

He did not have records to back up his assertion, however.

His job history backs up his assertion that he is a good manager.

Civil rights groups say there is no evidence to back up Mr. Reynolds's assertion.

Wow not a single name in your first paragraph to back up your assertion!

Let's see some figures to back up your assertion.

The interviews were used by the Chinese Government to back up its assertion that there had been no massacre in the square.