OAKLAND -- An Oakland Athletics' flag will be flying high atop the Tribune Tower Friday to initiate the first-ever Oakland A's Spirit Week, a celebration of the team during the first week of the Major League Baseball season.

The flag raising will be from 11:30 a.m. to noon Friday at the Tribune Tavern Restaurant, 401 13th Street.

Spirit Week starts Monday with the A's season-opening game against the Seattle Mariners. The A's were the American League West Division Champions last season.

"With the success of the A's and the excitement generated, we really want to cheer on the team," said Kim Bardakian, director of PR and Partnerships for Visit Oakland. "What would be better than getting organizations and the city involved and showing their support with A's apparel?"

A's manager Bob Melvin and Mayor Jean Quan will be raising the flag, which will stay on the tower until the season is over.

Throughout Spirit week, thousands of "Oakland Loves Our A's" posters will be posted around the city inside hotels, restaurants, local businesses. Oakland City Hall will also hang an A's flag and have the green and yellow team colors in lights shining from the building.

The Oakland Airport will also have the team's lights shining from the curbs of the terminals.