(Seattle, WA) -- The Mariners return from the All-Star break tonight as they open a three-game home series with the White Sox. Lefty Wade LeBlanc will take the mound for Seattle as the M's look to snap a four-game slide. Chicago counters with James Shields. The M's are second in the AL West at 58-and-39, five games behind the first-place Astros. Seattle is three ahead of Oakland for the second AL wild card.