Busy Day For Mariners In The Front Office


KANSAS CITY, MO. – Seattle Mariners announced today the following roster moves:


Peterson, 25, hit .264 (101×382) with 47 runs, 17 doubles, 2 triples, 12 home runs and 54 RBI in 103 games with AAA Tacoma this season. The 6-foot-1, 205-pound infielder recorded 32 walks and 75 strikeouts while posting a .323 on-base percentage with the Rainiers this season. He appeared defensively at 1st base (51 games, 50 starts), 3rd base (43 G, 41 GS) and left field (1 start) while also making 10 appearances at DH with Tacoma. Over his last 19 games (7/8-28), Peterson hit .250 (17×68) with 7 runs, 4 doubles, 2 home runs and 5 RBI.


The native of Chandler, AZ, was originally selected by Seattle with the 12th overall pick in the 2013 MLB First-Year Player Draft out of the University of New Mexico. He made 119 total appearances between AA Jackson and AAA Tacoma last season, combining to hit .264 (120×455) with 57 runs, 28 doubles, 1 triple, 19 home runs and 78 RBI. In parts of 5 minor league seasons in the Mariners organization, Peterson hit .269 (513×1908) with 262 runs, 107 doubles, 7 triples, 82 home runs and 334 RBI in 496 career games.

Mariners have acquired right-handed pitcher Ryan Garton and catcher Mike Marjama from the Tampa Bay Rays in exchange for AA left-handed pitcher Anthony Misiewicz, low-A infielder Luis Rengifo and a player to be named later.


To make room on the Major League, 40-man, roster, Seattle has designated catcher Tuffy Gosewisch for assignment.


Garton, 27, made his Major League debut with Tampa Bay in 2016. In parts of two big league seasons (2016-2017) he is 1-3 with a 5.26 ERA and 1 save in 44 games, all in relief. This season, he has had three stints with the Rays (April 22-30, May 24-28 and May 31-June 10) and has appeared in a total of 7 games. He is 0-1 with an 8.71 ERA (10 ER, 10.1 IP).


This season with AAA Durham, Garton is 2-0 with a 1.64 ERA (6 ER, 33.0 IP) and 4 saves in 24 games, including 1 start. He’s limited opposing hitters to a .162 batting average against and allowed just 18 hits in 33.0 innings while striking out 46 and walking just 16. In his minor league career since being drafted by Tampa Bay in the 34th round of the 2012 Draft out of Florida Atlantic, Garton has posted a 26-6, 2.63 (85 ER, 290.1 IP) mark with 25 saves. He’s struck out better than 1 batter per inning pitched, notching 292 strikeouts in 290.1 innings.


Marjama, 28, has spent the season with AAA Durham. He’s hitting .274 (72×263) with 16 doubles, 1 triple, 9 home runs and 51 RBI in 72 games with the Bulls. Marjama has caught 48 games this season, starting 46, and has thrown out of 43 opposing base runners attempting to steal a base.


Marjama was originally selected by the Chicago White Sox in the 23rd round of the 2011 First Year Player Draft out of Long Beach State University.      In seven minor league seasons, he is a .280 hitter (477×1705) with 109 doubles, 11 triples, 34 home runs and 228 runs batted in.


Misiewicz, 20, went 8-5 with a 4.75 (63 ER, 119.1 IP) in 23 starts combined between High-A Modesto (4/8-6/22 & 6/26-7/3) and AA Arkansas (6/23-25 & 7/4-current) this season. The left-handed starter combined limited opponents to a .267 (122×457) average, while walking 38 and striking out 117.  He was named California League Pitcher of the Week twice in 2017 (May 1-7 & June 5-11). Misiewicz was originally selected by the Mariners in the 18th round in the 2015 MLB First-Year Player Draft out of Michigan State University. In 3 minor league seasons in the Mariners organization, he went 18-17 with a 4.40 ERA (158 ER, 323.1 IP) in 66 games, 59 starts.


Rengifo, 20, hit .250 (100×400) with 65 runs scored, 24 doubles, 4 triples, 11 home runs, 44 RBI, 8 HBP, 33 walks and 29 stolen bases in 102 games with A Clinton this season. The switch-hitting infielder was originally signed as international free agent on July 8, 2013. In 4 minor league seasons in the Seattle organization, he hit .256 (244×953) with 169 runs scored, 52 doubles, 14 triples, 15 home runs, 108 RBI, 107 walks and 81 stolen bases in 260 career games.


Gosewisch, 33, has spent the majority of the season with AAA, but also appeared in 11 games with Seattle (May 5-21) this season. In 65 games with the Rainiers, he hit .219 (47×215) with 22 runs scored, 18 doubles, 4 home runs, 28 RBI and 26 walks. He threw out 17-of-51 baserunners (33.3%), which is the 3rd-highest caught stealing percentage in the Pacific Coast League this season among qualifying catchers. Gosewisch hit .071 (2×28) with 1 run in 11 games with Seattle after he was recalled on May 5.


Gosewisch was claimed off waivers by the Mariners from the Atlanta Braves on January 26, 2017. Prior to that he was claimed by the Braves from the Arizona Diamondbacks on November 18, 2016.  In parts of 4 seasons with Arizona (2013-16) and Seattle (2017), he has hit .190 (80×420) with 25 runs scored, 17 doubles, 1 triple, 5 home runs, 30 RBI and 18 walks in 137 games. In 11 minor league seasons with Philadelphia (2005-2012), Toronto (2012), Arizona (2013-2016) and Seattle (2017), he hit .244 (711×2912) with 349 runs scored, 191 doubles, 7 triples, 65 home runs and 357 RBI in 865 career games.

Mariners have acquired infielder Yonder Alonso from the Oakland Athletics in exchange for minor league outfielder Boog Powell.


Alonso, 30, was hitting .266 (85×319) with 52 runs, 17 doubles, 22 home runs, 49 RBI, a .369 on-base percentage, .527 slugging mark and a .896 OPS in 100 games with Oakland. The 2017 American League All Star has set career highs in home runs, on-base percentage, slugging and OPS. Among American League first basemen, his .527 slugging mark ranks 2nd, while his 22 homers and .369 on-base mark rank 3rd.


Against right-handed pitching this season, he’s hitting .286 (73×255) with 15 doubles, 18 home runs, 40 RBI, a .391 on-base percentage, .557 slugging and .948 OPS. In his career against righties, he’s hit .277 (527×1900) with 116 doubles, 2 triples, 51 home runs, 222 RBI with a .769 OPS.


In parts of eight Major League seasons with Cincinnati (2010-11), San Diego (2012-15) and Oakland (2016-17), he has combined to hit .269 (650×2419) with 272 runs, 144 doubles, 2 triples, 61 home runs, 288 RBI and a .339 on-base percentage in 762 games. He was drafted by Cincinnati in the 1st round (7th overall) in the 2008 MLB First-Year Player Draft out of the University of Miami (FL).


Powell, 24, hit .194 (7×36) with 6 runs scored, 2 RBI and 6 walks in 23 games over three stints with Seattle this season (4/29-5/4, 5/16-6/10 & 7/2-17). He was recalled by Seattle on April 29, made his Major League debut the same day at Cleveland as a pinch hitter, but did not record a plate appearance. Powell spent the majority of the season with AAA Tacoma, batting .340 (70×206) with 46 runs, 9 doubles, 2 triples, 6 home runs, 33 RBI, 28 walks and 11 stolen bases in 58 games with the Rainiers.


The 5-foot-10, 185-pound outfielder was originally acquired by the Mariners along with RHP Nathan Karns and LHP C.J. Riefenhauser from Tampa Bay for RHP Danny Farquhar, INF Brad Miller and INF Logan Morrison on Nov. 5, 2015. In parts of 6 minor leagues seasons in the Athletics (2012-14), Rays (2015) and Mariners organizations (2016-c), Powell is a career .306 (470×1536) hitter with 255 runs, 52 doubles, 21 triples, 15 home runs, 155 RBI, 74 steals and a .391 on-base percentage in 414 career minor league games. The native of Irvine, Calif., was originally selected by Oakland in the 20th round of the 2012 MLB First-Year Player Draft out of Orange Coast College.

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