Mariners select INF/OF Kristopher Negrón and recall RHP Erik Swanson from AAA Tacoma

OF Mac Williamson designated for assignment.

July 16th, 2019

OAKLAND, Calif. -- Seattle Mariners Executive Vice President & General Manager of Baseball Operations Jerry Dipoto announced today the following roster moves:

Kristopher Negrón, INF/OF, selected from AAA Tacoma.

Erik Swanson, RHP, recalled from AAA Tacoma.

Mac Williamson, OF, designated for assignment.

With today’s roster moves, the Mariners Major League, 40-man roster, is now at 39 players. Seattle has 7 days to trade, release or outright the contract of Williamson to the minors.

Negrón (#45) and Swanson (#50) will be in uniform and available for tonight’s (7:07 pm PT) game at the Oakland Athletics.

Negrón, 33, has spent the 2019 season with AAA Tacoma after being outrighted off Seattle’s 40-man roster on March 13. In 82 games with the Rainiers, he hit .310 (95-for-306) with 15 doubles, 4 triples, 12 home runs and 61 RBI with a .396 on-base percentage and a .503 slugging mark (.899 OPS). In his last 10 games, he posted a .375 mark (15-for-40) with 10 runs scored, a home run and 6 RBI.

Negrón appeared in 18 games with Seattle last September after being acquired by the Mariners from Arizona in exchange for cash considerations on Aug. 30, 2018. He appeared in 2 games last season with the Arizona Diamondbacks and was 1-for-3 with an RBI. He spent most of 2018 with AAA Reno, appearing in 118 games and batting .283 (105-for-371) with 17 doubles, 5 triples, 15 home runs and 45 RBI.

Negrón has appeared in parts of 6 Major League seasons with Cincinnati (2012, 2014-15), Arizona (2017-18) and Seattle (2018), combining to appear in 130 games with a .215 (64 for 298) average with 13 doubles, 1 triple, 7 home runs and 24 RBI. He has appeared in the Majors at every position except pitcher and catcher, making starts at the other 7 positions on the field. In his career he’s appeared at: first base (4 games, 3 starts); second base (26 games, 18 starts); third base (31 games, 27 starts); shortstop (19 games, 11 starts); left field (20 games, 6 starts); center field (6 games, 3 starts) and right field (4 games, 3 starts).

Swanson, 25, will be in his 3rd stint with the Mariners this season (also: April 9-11 and April 14-May 17). In 7 games (6 starts) with the Mariners in 2019, he is 1-5 with an 8.04 ERA (28 ER, 31.1 IP) with 24 strikeouts and 5 walks. The 6-foot-3, 220-pound right-hander made his Major League debut April 11 at Kansas City, allowing 2 runs in 2.0 innings of work. He began the season with Triple-A Tacoma, where he made 1 start prior to being recalled. Overall at Tacoma he is 0-1, 5.55 (28 ER, 31.1. IP) in 10 games, 6 starts. 

Swanson was acquired by Seattle from New York-AL on Nov. 19, 2018 (with Justus Sheffield and Dom Thompson-Williams) in exchange for James Paxton. In parts of 6 minor league seasons with the Rangers (2014-16), Yankees (2016-18) and Mariners (2019-c), he is 23-13 with a 3.49 ERA (148 ER, 381.1 IP) with 382 strikeouts and 99 walks in 103 games (65 starts). He was originally selected by Texas in the 8th round of the 2014 MLB Draft.

Williamson, 29, was signed by Seattle as a minor league free agent June 5 and was selected from Tacoma that day. He had declined a minor league assignment from the San Francisco Giants on June 1. In 25 games with Seattle he was hitting .182 (14-for-77) with 3 home runs and 10 RBI with 9 walks and 26 strikeouts. Williamson had a double, a home run and 7 RBI in 15 games with the Giants while hitting .118 (6-for-51) in 15 games between May 7 and May 24. He started the season at AAA Sacramento where he hit .378 (31-for-82) with 4 doubles, 9 home runs and 22 RBI in 23 games. He slugged .756 and posted a .459 on-base percentage with the River Cats this season.


Williamson was originally selected by the Giants in the 3rd round of the 2012 Major League First-Year Player Draft. He has appeared in the Majors in parts of 5 seasons (2015-2019), all with San Francisco. In his MLB career, Mac has combined for a .207 (74-for-357) average with 10 doubles, 1 triple, 14 home runs and 40 RBI in 135 games.