Fried, who will begin the season with Class A Advanced Lake Elsinore of the California League, might miss some time at the beginning of the regular season in April, although not much, said Randy Smith, the Padres' vice president of player development.
Fried was scheduled to take part in the team's annual prospect minicamp but he reported soreness in his left forearm when he arrived in Peoria last month.
Fried, who turned 20 in January, has gone 6-8 with a 3.50 ERA in 136 1/3 professional innings, nearly all of them coming last year in his first full professional season with Class A Fort Wayne of the Midwest League.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.