The Seattle Mariners kept dim playoff hopes alive Thursday night with a thrilling walk-off win orchestrated by team leader J.P. Crawford. In order for the Mariners to find a way to sneak into the postseason, they will need to win and get some help from around the league. That's why Seattle fans should be all in on backing the Arizona Diamondbacks in the season's final weekend, as they host the Houston Astros for a three-game series beginning Friday. Going into Friday, the Mariners trail Houston by one game in the standings, and the Toronto Blue Jays by two games. Seattle does hold the tiebreaker over the Astros, so if the teams end the season with the same record, the Mariners would be back in the postseason. Read the full story: https://www.king5.com/article/sports/mlb/mariners/mariners-playoff-chase-d-backs/281-db4331db-a391-4665-87ff-1f8d08c54a20