no, you must take 25 different players from different teams. ie ruth from yanks means you may not select any more NY yankee players, then williams from Boston Redsox, no more Bosox, walter Johnson from senators could be your WC, then no more WC players. Basically its a team built from 24 players from diff teams that are same city and team name in the standings today and 1 player from a team not in standings, ie montreal expo or a milwaukee brave and so on.
see list of teams above as a checklist when choosing...remember it has to be same city and team name regardless if franchise changed. there was early baltimore orioles that changed to yankees (that would count as your Baltimore player) also there was an early washington nationals team, you may take those players as a nationals player