Red Sox activate Yacksel Ríos, option Michael Chavis to Triple-A Worcester

Rios, who turns 28 later this month, was acquired from the Mariners in exchange for cash considerations on Monday. Boston was able to add him to their 40-man roster since they had just designated fellow right-hander Ryan Weber for assignment.

In three relief appearances for Seattle — all of which came in June — Rios allowed a total of three earned runs on five hits, two walks, and one hit batsman to go along with two strikeouts over three total innings of work.

The Mariners designated the 27-year-old hurler for assignment on June 11, and it took all of three days for him to land with a new team.

Like Red Sox manager Alex Cora, Rios — a converted third baseman — hails from Caguas Puerto Rico. He was originally selected by the Phillies in the 12th round of the 2011 amateur draft out of Doctora Conchita Cuevas High School in Gurabo.

After making his major-league debut for the Phillies in 2017, Rios was claimed off waivers by the Pirates during the 2019 season and has also spent time with the Rays and Mariners organizations.

For his big-league career, Rios owns a lifetime 6.47 ERA and 5.54 FIP over 69 appearances and 72 1/3 total innings pitched between Philadelphia, Pittsburgh, and Seattle dating back to August 2017.

This year alone, as previously mentioned, Rios appeared in three games for the Mariners earlier this month. Before that, he put up a solid 0.66 ERA across 12 outings (13 2/3 innings pitched) with Triple-A Durham (Rays affiliate) to begin the 2021 minor-league campaign prior to getting dealt to the M’s for cash on June 4.

Listed at 6-foot-3 and 220 pounds, Rios operates with a five-pitch mix that consists of a sinker, a four-seam fastball, a slider, a split-finger fastball, and a rarely used curveball, per Baseball Savant.

—

Michael Chavis, meanwhile, will be optioned back down to Triple-A Worcester after not appearing in a game in his third stint of the season with Boston.

The 25-year-old was initially called up from the WooSox on Monday as part of a series of moves that saw Ryan Weber get designated for assignment, but wound up finding no playing time as an additional position player on the roster for the two games he was up.

As he returns to Worcester, Chavis carries with him a .263/.329/.408 slash line with two doubles, three home runs, 12 RBI, 14 runs scored, and one stolen base over 19 games (85 plate appearances) for the WooSox thus far.