The Seattle Mariners are an American professional baseball team based in Seattle. The Mariners compete in Major League Baseball (MLB) as a member club of the American League (AL) West Division. The team joined the American League as an expansion team in 1977, originally playing their home games in the Kingdome. Since July 1999, the Mariners' home ballpark has been T-Mobile Park, located in the SoD The first home run in team history was hit in their fifth game on April 10, 1977, by designated hitter Juan Bernhardt. That year, pitcher Diego Seguí, in his last major league season, became the only player to play for both the Pilots and the Mariners. The Mariners finished at 64–98 (.395), matching the 1969 Pilots' record. The team avoided finishing in last place in the AL West by half a game. The Mariners did not post a winning record or finish above fourth place during their first fourteen seasons. In 1979, Seattle hosted the 50th MLB All-Star Game at the Kingdome. The Mariners were sold to California businessman George Argyros in 1981, who in turn sold the team in 1989 to a group led by Indianapolis-based Jeff Smulyan, who owned radio and television stations, for $76 million. Smulyan proposed moving the team to Tampa, Florida or another market in 1992 before he put the team up for sale. Nintendo of America bought the team after the dismal 1992 season; Nintendo CEO Hiroshi Yamauchi, who held a 49 percent share of the franchise, had never been to a baseball game but sought to thank the city for its role in the company's success. In January 2015, the team announced a new alternate uniform to be worn for Sunday home games. This cream-colored "fauxback" uniform features the current logo and lettering style in a royal blue and gold color scheme, a throwback to the original team colors. Unlike the rest of the uniform set, the back of the jersey does not display the player name. The cap features the current cap logo in the throwback colors. In January 2019, the Mariners announced a new home and away uniform to be worn during spring training. The jersey has a design similar to their home white jerseys but features a powder blue throwback to the team colors during the 1980s. The cap has the usual navy blue color, but with a logo that features the signature compass rose and with a large M in the center. For the 2023 season, MLB and Nike have instituted a "four plus one" model for team uniforms, consisting of a home uniform, away uniform, two alternate uniforms, and a City Connect uniform featuring "color schemes and logos that pay homage to a team's city." The Mariners…