Meadors, 22, was a 21st round draft selection by the Phillies in 2013 out of Cowley County Community College. The six-foot-four 200 pounder posted a 2-3 record along with two saves, a 3.76 ERA and a 7.36 K/9 mark in 37 outings in his time with the Phils.
Stefan, a six-foot-four 220 pounder, was a 22nd round draft choice in 2012 out of Louisiana Tech University. Stefan, 24, sported a 6-12 record with a 6.44 ERA in 29 games with Class A Advanced Clearwater this past season.
Third baseman Williams, a right-handed hitter, was selected by the Phils in the 7th round of the 2013 draft. The 20-year-old posted a .197 average with five home runs, 22 RBI and one steal in 76 games in the rookie level Gulf Coast League over two seasons.
Also trimmed by the Phils were 21-year-old right-handed pitcher Gregorio Santos, 21-year-old lefty pitcher Francibel Alejo, 24-year-old outfielder Nick Ferdinand, 24-year-old middle infielder Anthony Phillips, 20-year-old second baseman/outfielder Olvy Marte and 22-year-old right-hander Robinson Torres.