http://mlb.nbcsports.com/2018/02/02/players-are-getting-pretty-dang-upset-about-the-lack-of-free-agent-signings/
Earlier this week, in conference calls that union officials held with player representatives, players asked about the viability of collectively refusing to show up at spring training until Feb. 24, the mandatory reporting date, according to sources. It was a significant step — signed players standing up for unsigned players — but the union informed the players that an organized action of that sort would constitute an unlawful strike in violation of the CBA, and the players dropped the idea, sources said.
Seems like the players aren't actually aware of what the union contract says. Maybe they'll pay attention and get a better deal from the owners this time?