· Left-handed pitcher David Rollins recalled from AAA Tacoma.
· Left-handed pitcher Wade Miley placed on the 15-day disabled list, retroactive to June 13.
· Right-handed pitcher Steve Johnson designated for assignment.
Aro (#49) and Rollins (#59) will be uniform and available for today's (4:10 pm PT) game in Boston.
The Mariners now have 10 days to trade, release or outright the contract of Johnson to the minors. Seattle's Major League, 40-man roster, is now at 39.
Aro, 25, was 2-2 with 1 save and a 2.45 ERA (9 ER, 33.0 IP) with 24 strikeouts in 22 games including 1 start with AAA Tacoma this season. In his last 12 appearances, including 1 start, Aro is 2-1 with a 3.00 ERA (5 ER, 15.0 IP) with 16 strikeouts and 2 walks. In 21 relief appearances with Tacoma, Aro is 2-2 with 1 save and a 2.79 ERA (9 ER, 29.0 IP) with 22 strikeouts and 9 walks. Aro has posted 14 scoreless relief appearances, including 9 of his last 11 outings.
He made his Major League debut in 2015 with Boston, going 0-1 with a 6.97 ERA (8 ER, 10.1 IP) with 8 strikeouts in 6 games. In parts of 6 minor league seasons, Aro is 18-17 with a 2.80 ERA (104 ER, 334.1 IP) with 315 strikeouts in 123 games, including 13 starts. Aro was signed by Boston as a non-drafted free agent in 2011. He was acquired by Seattle on Dec. 7, 2015 (with Wade Miley) from Boston in exchange for Roenis Elias and Carson Smith.
Rollins, 26, is 2-0 with a 2.36 ERA (7 ER, 26.2 IP) in 22 games with AAA Tacoma this season, all in relief. Rollins has struck out 22 while not walking a batter. David is 1-0 with a 0.84 ERA (1 ER, 10.2 IP) in 10 road appearances this season. Overall, he's allowed earned runs in just 5 of his 22 appearances, and has allowed more than 1 run just once.
Rollins made his Major League debut July 4, 2015 at Oakland after being acquired by Seattle from Houston in the Major League portion of the Rule 5 Draft. He finished the year 0-2, 7.56 in 20 relief appearances (21 ER, 25.0 IP). He was 0-0 with a 0.00 ERA (0 ER, 9.1 IP) in 7 games at AAA Tacoma on a rehabilitation assignment prior to his debut last season.
In his minor league career (2011-current), Rollins is 25-16, 3.24 (142 ER, 394.2 IP) with 4 saves in 117 games (64 starts). He was drafted by Toronto in the 24th round of the 2011 June Draft and was traded to Houston in July 2012.
Miley, 29, was placed on the 15-day disabled list, retroactive to June 13, with a left shoulder impingement. He was acquired from Boston Dec. 7, 2015 (with Aro) in exchange for LHP Roenis Elias and RHP Carson Smith.
This season Wade is 6-3 with a 5.28 ERA (45 ER, 76.2 IP) in 13 starts this season. He won six straight decisions over nine starts from April 24 to June 7 (Seattle was 8-1 in the 9 games) prior to taking the loss in his last start, a 6-2 setback vs. Texas on June 12 in which he lasted just 5.0 innings and allowed 3 earned runs.
Miley was 11-11 with a 4.46 ERA in 32 starts for the Red Sox in 2015. He threw 193.2 innings, the fourth consecutive season he's pitched in 32 games or more and tossed at least 193.0 innings. In his first AL season in 2015, he led the Sox in wins, starts, innings and quality starts (17). Miley is 1 of 4 lefties (and 13 pitchers overall) to have made at least 32 starts in each of the last 3 seasons from 2013-15.
His 111 starts since the beginning of 2013 are the most by a left-handed pitcher and fifth overall in the Majors (Dickey, 115; Shields, 114; Scherzer & Tillman 112). His 140 starts since 2012 are T3rd-most in the Majors amongst left-handers behind only Jon Lester (143) and Madison Bumgarner (142) and tied with Clayton Kershaw (140).
Named an All-Star in his first full season with Arizona in 2012, Miley is 55-49 with a 4.06 ERA (410 ER, 909.0 IP) in 151 career appearances (147 starts) between the Diamondbacks, Red Sox and Mariners.
Johnson, 28, was 1-0 with a 4.32 ERA (8 ER, 16.2 IP) with 17 strikeouts in 16 relief appearances with the Mariners this season after being selected from AAA Tacoma on May 3. On May 11, Johnson tossed 1.2 scoreless innings in relief vs. Tampa Bay, earning his first win since May 29, 2013 vs. Washington with Baltimore, a span of 1,077 days between wins.
Prior to being selected, Johnson was 1-0 with a 2.25 ERA (4 ER, 16.0 IP) with 20 strikeouts and 2 walks in 7 relief appearances with AAA Tacoma.