For the 2019 season, we have introduced a per matchup GS cap for pitchers in H2H leagues and for playoff matchups.
This is a league-specific option and should be set by league commissioners for both regular season and playoffs before the MLB regular season begins.
This cap will ensure that teams have up to 5 slots available for SP on any given day. However if a team has less than 5 games left against their per-matchup cap, they will only have enough slots on their lineup page to hit their cap. For example, in a 8 GS cap league, every team will have 5 SP slots on Monday. If a team puts a starting pitcher in each of their 5 slots and all 5 of those pitchers pitch on Monday, then on Tuesday they will only have 3 SP slots available to put pitchers in.
This makes the GS cap a hard cap that should not be exploitable in the ways that soft caps can be.
For the longer matchup weeks in the regular season (beginning of the season, around the All-Star Break), the GS cap applies for the whole matchup and is not changed even though those matchups cover more than 7 days of the MLB regular season.
Playoff settings do not inherit from regular season settings - commissioners must set each GS cap separately. For 2-week playoff matchups and 2-week playoff matchup only, the cap applies separately to each week of the matchup. For example, in an league with a per-matchup cap of 8 GS, teams have up to 8 starts available in week 1 and 8 starts available in week 2. They cannot carry over unused starts from week 1 into week 2.
Please use this thread if you have any other questions about how the per-matchup GS cap will be implemented.