The Seattle Mariners have demoted struggling second baseman Dustin Ackley to Triple-A Tacoma, the second young prospect the team has sent down in the last week.
Jason Bay hit a two-out RBI single in the 13th inning, lifting the Seattle Mariners to a 4-3 victory over the Texas Rangers that snapped an eight-game skid.
Hernandez (5-4) was trying to rebound from a poor outing in his last start at Cleveland, but continued to leave pitches up in the strike zone and Texas took advantage.
The Seattle Mariners have designated infielder Robert Andino for assignment, recalled infielder Carlos Triunfel from Triple-A Tacoma and selected catcher Jesus Sucre.
The 23-year-old Montero is hitting .208 with three home runs and nine RBIs. He hit .260 with 15 homers and 62 RBIs last year in his first full season in the majors.
Yan Gomes hit a three-run homer in the 10th inning and the Cleveland Indians, twice revived by Seattle's fielding errors, beat the Mariners 10-8 on Monday to complete a four-game sweep.
Michael Brantley hit a three-run homer in the second inning off Hernandez (5-3), who failed to go at least six innings for the first time this season
Seattle tied the score at 4-all with two-out, solo homers by Raul Ibanez and Justin Smoak off Indians closer Chris Perez in the top of the ninth but Cleveland answered
Jason Kipnis' three-run homer in the 10th inning gave the Cleveland Indians a 6-3 win over the Seattle Mariners on Friday night.
Bay was looking ahead, preparing for his first game in New York since three disappointing seasons with the Mets.
Joe Saunders won his ninth straight decision at Safeco Field and Kendrys Morales hit a three-run homer, leading the Seattle Mariners over the Oakland Athletics 6-1 Sunday.
Josh Donaldson, Daric Barton and Brandon Moss hit solo home runs and Jarrod Parker pitched into the seventh to lead the Oakland Athletics to a 4-3 win against the Seattle Mariners on Saturday night.