Ian Poulter was digging through his office desk three days ago when the yardage book from the 2010 WGC-Accenture Match Play Championship fell out.

He brought the book to Dove Mountain this week, both for luck - Poulter won the event three years ago - and for practical purposes. The distances from the tees to the greens are still the same.

"Apart from the weather," he said, "I couldn't be in better shape."

You could say that about Southern Arizona today.

It's our biggest sports day of the year. Twenty minutes after dawn, Match Play golfers will begin chasing the $1.5 million grand prize.

About 16 hours later, the final buzzer will conclude the Arizona Wildcats' home basketball game against Washington. In between, a sports-crazy Tucsonan could drive to the rodeo for slack competition and then to Tucson Trap and Skeet Club, where more than 1,200 participants are competing. They could be at Kino Stadium by 5 p.m., when the first of two Desert Diamond Cup soccer games kicks off.

Predictions of cold - and maybe even snowy - weather threaten to dampen the day.

Aside from that, though, Tucson sports couldn't be in better shape.

Snow place like home

The National Weather Service has issued a winter storm warning in effect through 11 tonight.

The storm is expected to bring showers and snow today - with some blizzard conditions possible in mountain areas - and much lower temperatures. Wind gusts of nearly 40 mph are likely.

The snow level is expected to be about 3,000 feet during the day, dropping to about 2,300 feet by tonight. The weather service says there could be snow accumulation of 1 to 3 inches in the valley of the Tucson metro area and 5 to 9 inches in the foothills. Mount Lemmon could get about a foot or more of fresh powder.

The predicted high today in Tucson is 44 to 49 degrees.

See Rodeo Parade map on Page A6.

Nice game, Mr. President

Tiger Woods arrived at Dove Mountain on Tuesday raving about President Obama's short game. Page B1

Welcome back, coach

Seattle Sounders coach Sigi Schmid first visited Tucson in the late-1980s. Now, his team can win here. Page B3

more online

Find extensive coverage, scores, photos and video from all of these major events today at azstarnet.com/sports