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Denis Poroy, Associated Press
Denver Broncos quarterback Tim Tebow is tackled by San Diego Chargers outside linebacker Antwan Barnes during the first half of an NFL football game Sunday, Nov. 27, 2011, in San Diego.

ENGLEWOOD, Colo. — Tim Tebow might want to update his autobiography and not just because it's already a best-seller.

In "Through My Eyes," Denver's unconventional quarterback writes about how those who finish strong in football or life will achieve success and even greatness.

He could write several more chapters on the subject in addition to the two pages he devoted to the topic in his book.

Since taking over as the Broncos' starter a month and a-half ago, Tebow has engineered three fourth-quarter comebacks, two of which set up overtime wins for Denver, and another win at Oakland in which he rallied Denver from a halftime deficit to win going away.

In nine NFL starts, he has four fourth-quarter comebacks among his half-dozen wins.