Seager not only leads the Mariners with 17 RBIs, but he also leads the team with two-out RBIs (10), which ties him for third in the American League.
Blake Beavan received the start on Monday, his first since allowing five runs on seven hits in just 5 1/3 innings at Tampa Bay.
"Just to get back on line with that fastball," said Mariners manager Eric Wedge of what Beavan needs to do to be successful. "Command his fastball and working everything off that -- that's his bread and butter, that's what he does well. So we're looking for him to get back on track with that -- and I'm sure he will."