How to Play Fantasy baseball has come a long way since the days when, 
in many cases, it was a hitters-only game. In my opinion, the ultimate baseball league today is an everyday, head-to-head competition that resembles the real game.

Here's how it's played: 

1. Draft 25-man rosters. Optional: Expand to 28- or 30-man rosters so that pitching staffs are deeper. 
2. Create a head-to-head schedule such that, each day at least 28 of the 30 major-league teams are playing, your league also has a full slate of games. In most cases, you will find this will occur on Tuesdays, Wednesdays, Fridays, Saturdays and Sundays, so the recommended schedule is: a two-game series against the same opponent on Tuesday-Wednesday and a three-game series against a different opponent on Friday-Saturday-Sunday.
3. Submit lineups daily (whenever your games are scheduled) that include one catcher, first baseman, second baseman, shortstop, third baseman, designated hitter (a player from any position), starting pitcher and relief pitcher and three outfielders. If you have no starting pitcher going that day, that's your tough luck. You get no points from that position. 
4. Score points based on five hitting and five pitching categories. For hitters, award 4 points per run scored and RBI, 2 points per stolen base, 1 point per hit and 1 bonus point per home run. For pitchers, award 10 points per win, 8 points per save and 1 point per strikeout and full inning pitched. Subtract 1 point per earned run allowed. 
5. Full-season standings based on wins and losses. Optional: Top teams make the playoffs, which can start on or around Sept. 15. Also, ties can be broken in many ways, such as most hits by a team that day.
6. Allow two roster moves per week, one on Monday and the other on Friday, with lowest team in the standings getting first choice. Monday transactions involve all players. Friday's moves are for pitchers only.