Irwin opened the 2007 season with a runaway win, his 45th on the Champions Tour. The win here last year was his first since 2005.
The tour's all-time wins leader won this title for the first time in 1997 and will be teeing it up at Hualalai for the 13th straight year.
In the last seven years, no winner has carded a round in the 70s. When Loren Roberts won in 2006, his winning total of 25-under-par 191 tied the lowest 54- hole score in Champions Tour history.
The very busy GOLF CHANNEL will have live coverage of all three rounds.
The Champions Tour shifts to Kahuku next week for the Turtle Bay Championship, where Fred Funk won last year.