Tension builds as tournament draws to a close

Hundreds of thousands of dollars is on the line in the final day of the O.C. Tuna Tournament Sunday.

Sunday marks the conclusion of the three-day event.  The grand prize: $857,000 is at stake this year.  We're told a monster 67-inch blue fin was caught Sunday, and that could affect the final results in a big way.

That blue fin was a rare catch this year, as most of the fish caught have been yellow fin.

The atmosphere at Micky Fins is sure to be exciting Sunday night, as officials are expecting the leader board to change right up to the final whistle.

"There is quite a lot of excitement, you never know what is going to happen on the last day," said tournament director Jennifer Blunt.  "We do have a big fish coming in.  They'll be here early and so hopefully that's going to make a lot of changes on the leader board going into tonight.  They're looking at over $300,000 in cash."

The final tallies will be in tonight for the largest tuna tournament in the world.