The San Diego Padres and the Seattle Mariners open a 3-game interleague series Monday at T-Mobile Park in Seattle.

The San Diego Padres are one of the best teams in baseball right now, and it's partially thanks to some former A's players who have been key factors to their recent success. Although all three players were acquired mid-season, the spark they've added to this Padres squad is impressive and will set them up to make a good postseason run.

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