Mickelson shot a 5-under 66 Sunday to match the best round of the tournament and win his first claret jug.
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A day after carding a triple bogey, Bill Haas avoided trouble Sunday at the AT&T National and claimed his first victory of the season.
Bill Haas perseveres after a triple bogey and puts himself in contention to claim his fifth career PGA Tour victory at the AT&T National.
Jordan Spieth, 19, doesn't own a PGA Tour card yet. But he owns a share of the lead at the AT&T National, which was suspended for rain Friday afternoon.