Efforts by the Mariners to restock the organizational depth in their pitching staff were under way even before Wednesday’s blockbuster trade sent right-hander Taijuan Walker to the Arizona Diamondbacks.
Caughel was the pitcher of the year in the American Association, an independent league, after going 6-3 with a 2.09 ERA in 19 games, including 17 starts, for the Lincoln Saltdogs.
It was a bounce-back year for Caughel, who missed nearly all of 2015 after undergoing labrum surgery.
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Caughel was a 23rd-round pick by the Los Angeles Dodgers in the 2012 draft. He was 17-19 with a 3.72 ERA over four minor-league seasons in the Dodgers’ organization prior to his injury.
Both players were designated for assignment on Nov. 2 and agreed to minor-league deals shortly after clearing waivers.
Cook, 29, spent all of last season on the disabled list because of a torn back muscle. He was 13-12 with a 3.43 ERA in 217 games over the five previous seasons with Arizona, Oakland and Boston.
The Mariners assigned Cook to their Triple-A Tacoma roster.
Baron, 25, was the 33rd overall pick in the 2009 draft whose only big-league experience came late in the 2015 season, when he went hitless in 11 at-bats over four games. He has a .234 average in 554 games over eight minor-league seasons.
Owings, 34, was 7-6 with a 4.30 ERA last season in 23 games, including 19 starts, for the York Revolution in the independent Atlantic League. He pitched in parts of six big-league seasons from 2007-12 with three clubs.
Mills, 31, is remaining with the organization. He was 3-3 with a 5.28 last season in nine starts at Tacoma before a shoulder injury forced him to the disabled list. His rehab is expected to continue into spring training.
Tago, 24, is a six-year professional who was 6-4 with seven saves and a 4.37 ERA last season in 38 appearances at Double-A Birmingham in the Chicago White Sox’s system.
Perry, 24, spent the last seven seasons in the Arizona system. He was 0-1 with a 4.63 ERA last season in 18 relief appearances at Hi-A Visalia before missing the final three months because of an injury.
Tago was assigned to Tacoma; Perry was assigned to Double-A Arkansas.
Bob Dutton: @TNT_Mariners