Seattle general manager Jack Zduriencik announced the list Friday.
In addition to Zunino, the Mariners' first-round pick in the 2012 draft, the group includes right-handed pitcher Taijuan Walker, infielder Stefen Romero, infielder Brad Miller, infielder Nick Franklin and left-handed pitcher James Paxton.
Zunino, (No. 1), Walker (No. 2), Paxton (No. 4), Franklin (No. 5), Romero (No. 8) and Miller (No. 9) are ranked among the Mariners' top 10 prospects by Baseball America.
The Mariners' spring-training roster stands at 58 players (40 roster, 18 non-roster), including 30 pitchers (11 non-roster), five catchers (three non-roster), 15 infielders (four non-roster) and eight outfielders (0 non-roster).
Pitchers and catchers report to spring training in Peoria, Ariz., on Feb. 12 and hold their first workout Feb. 13. Position players are scheduled to report for physicals Feb. 15. The first full-squad workout is set for Feb. 16.
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