Safeco Field get a facelift in the coming months.

The Mariners have announced that they will be moving in portions of the outfield wall for the 2013 season.

The biggest change involves the left-field power alley, which has been tough on right-handed hitters since the park opened in 1999.

The fence will be moved in from four to 17 feet at different points in left field and four feet from straight center field to the right-center gap.