Seattle MarinersP.O. Box 41000, 1st Ave S. & Atlantic St.
Seattle, Washington 98104
Embarking on a new era in Mariners' baseball history, the club opened its new ballpark, SAFECO Field (now T-Mobile Park), on July 15, 1999 vs. the San Diego Padres. The team would go on to grab a wild card berth in the 2000 playoffs, advancing to the ALCS vs. the eventual Champion New York Yankees. Next year (2001), the Seattle Mariners went on to tie the major league record for wins in a single season with 116.