Every year, teams invite a group of players not on their 40-man rosters (NRIs, or non-roster invites) to their spring training camps. Sometimes NRIs are long-term minor-leaguers getting a crack in a new system, and other times they’re non-40-man prospects being given a test drive against tougher competition to help the team make decisions about placement for next season. In the lean rebuilding years we’ve seen many more of the former in Mariners spring trainings, but this crop has some recognizable names for those of you who follow the Mariners minors closely (and one name even casual fans should recognize).