How are the Mariners Top Prospects Faring this Spring?

Mar 16, 2016; Peoria, AZ, USA; General view of the field prior to the game between the Seattle Mariners and the San Francisco Giants at Peoria Sports Complex. Mandatory Credit: Matt Kartozian-USA TODAY Sports
Mar 16, 2016; Peoria, AZ, USA; General view of the field prior to the game between the Seattle Mariners and the San Francisco Giants at Peoria Sports Complex. Mandatory Credit: Matt Kartozian-USA TODAY Sports /
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Jul 1, 2015; Toronto, Ontario, CAN; Boston Red Sox relief pitcher Jonathan Aro (65) delivers a pitch against Toronto Blue Jays at Rogers Centre. Mandatory Credit: Dan Hamilton-USA TODAY Sports
Jul 1, 2015; Toronto, Ontario, CAN; Boston Red Sox relief pitcher Jonathan Aro (65) delivers a pitch against Toronto Blue Jays at Rogers Centre. Mandatory Credit: Dan Hamilton-USA TODAY Sports /

Jonathan Aro – RHP

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The Seattle Mariners acquired Jonathan Aro from the Boston Red Sox this offseason, and he immediately became one of the M’s better relief prospects. Unfortunately, Aro has struggled mightily this spring with Seattle. He has registered an 8.53 ERA and posted a 7:2 strikeout to walk ratio across 6 appearances. The opposition is hitting .346 and Aro has allowed 1.74 walks/hits per inning the spring.

Originally signed as an international free agent in 2011, Aro steadily climbed through the Red Sox’s minor league system before making his debut last June. He struggled in his first taste of the big leagues, going 0-1 and posting a 6.97 ERA across 6 appearances. Aro struck out 8 and walked 4 through 10.1 innings of work.

The Mariners are looking for relievers right now, but Aro’s poor spring has hurt his chances of opening the season in Seattle. The 25-year-old will likely begin the 2016 season down the road in Tacoma with the Rainiers.

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