The Seattle Mariners took advantage of a down day for the rest of the American League contenders with a 3-1 win against the Athletics on Monday at Sutter Health Park. The Mariners improved to 57-50 with the victory,

Luis Castillo allowed a run in seven innings, Josh Naylor hit his first home run for the Mariners and Seattle beat the Athletics 3-1 on Monday night. Castillo (8-6) gave up five hits and had four strikeouts.

Right-handed pitcher Luis Castillo is scheduled to take the mound for the Mariners (54-47) at T-Mobile Park in Seattle. His earned run average in his last three appearances is just 1.45. Right-hander Quinn Priester will pitch for the Brewers (60-41). His ERA in his previous three appearances is 3.24.