The extended their majors-leading winning streak to 12 games on Friday night, knocking off the 8-3 ( ). Mark Melancon Jersey The Mariners are now 49-42 on the season, giving them a half-game lead over the for the American League's second wild card spot. (The expanded postseason means the Blue Jays would also qualify for the playoffs if they started tomorrow.)The Mariners controlled most of Friday's game. Seattle built a 3-0 lead in the fourth inning and later extended it to 4-0 in the fifth. The Rangers would chip away at that margin with home runs from (making it 4-1) and (4-3) over the course of the next few innings. It wouldn't Austin Riley Jersey matter. Rookie sensation Julio Rodrguez hit his first career grand slam in the eighth, putting Seattle up 8-3: . is ready for the Home Run Eddie Mathews Jersey Derby Seattle Mariners (@Mariners) Rodrguez is the first Mariners player who is 21-years old or younger to hit a grand slam since Alex Rodriguez did it on July 6, 1996, . Coincidentally, A-Rod's grand slam also came against the Rangers. The Mariners also received a quality start from reigning AL Cy Young Award recipient . He delivered 6 innings, Ronald Acuna Jr. Jersey surrendering three runs on six hits while i suing no walks and striking out 12 batters. That strikeout total matches his season-high, previously set on July 3 against the .This stretch marks just the fourth time in franchise history the Mariners have won 10 or more consecutive games. They previously authored 10-game winning streaks during both the 1996 and 2002 seasons. Their only winning streak longer than the current one occurred during their 116-win 2001 campaign, when they reeled off a 15-game winning streak from May 23 until June 8. Josh Donaldson Jersey The , the other team with an active 10-plus-game winning streak, .