Conversation so far:
When did Phil Mickelson get his first championship?
Phil Mickelson's first major championship win came in his thirteenth year on the PGA Tour in 2004, when he secured victory in the Masters.
What happened during Phil Micelson's first major championship win on the PGA Tour in 2004 in the Masters?
Phil Mickelson secured victory in the Masters with an 18-foot (5.5 m) birdie putt on the final hole.
What did Phil Mickelson do next after first major championship win on the PGA Tour in 2004 in the Masters?
Phil Mickelson captured his second major at the PGA Championship at Baltusrol in 2005.
How did Phil Mickelson play while capturing his second major at the PGA Championship at Baltusrol in 2005?
On the 18th hole, Phil Mickelson made his birdie to finish at a 4-under-par total of 276, one shot ahead of Steve Elkington and Thomas Bjørn.
When did Phil Mickelson get his third major win?
Phil Mickelson captured his third major title at the 2006 Masters.
Where was Phil Mickelson playing to win his third major title?
Phil Mickelson captured his third major title at the 2006 Masters.
What happened with the last win for Phil Mickelson at the 2006 Masters?
Phil Mickelson won his second green jacket after shooting a 3-under-par final round, winning by two strokes over runner-up Tim Clark.

Question: Was this an important win for his career?
Self-contained rewrite: Was Phil Mickelson's third major title at the 2006 Masters an important win for his career?