Starts & Sits for MLB Week 21 - All Starting Pitcher Matchups for Fantasy Baseball

Fantasy baseball starts and sits, advice for all starting pitcher matchups Week 21. Set optimal lineups with Jon's start/sit recommendations.

Welcome back RotoBallers! Big week in fantasy leagues as we approach the end of the season and playoffs! As always, we are here with our starting pitcher starts and sits series to help you set those winning lineups for the week ahead!

For those who are not familiar, RotoBaller puts out a weekly grid of starting pitcher matchups and "start or sit" recommendations, and this is our 10th year now writing this weekly column. For every week of the fantasy baseball season, we are going to analyze every single projected starting pitcher matchup for fantasy baseball and help you set optimal lineups.

Below are the projected starting pitching matchups and starts/sits for Week 21, covering August 29th through September 4th. We will keep this updated as rotations continue to be announced and modified. This column will make continuous adjustments for any postponements or rotation shuffles, reflecting official beat writer speculation for as many unconfirmed rotation slots as possible – so be sure to check back daily. Let's set those winning lineups!

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Start/Sit Data Overview

This weekly piece considers the pitcher’s opponents, their outlook against lefties and righties, some ballpark factors, and historical splits. With all of this information, we then provide our start/sit recommendations for each starting pitcher matchup for the approaching week of fantasy baseball.

Each player will be valued with a Start/Sit recommendation, we are also including a "Score" column this year to display the level of confidence in that pick. Scores go from 0-100 in increments of five. The higher, the better! They are also color-coded, as you'll see.

Legend:

• Proj GS - the number of starts the starter is projected to make in the week's scoring period.
• Score - A metric of confidence, from 0-100 in increments of five. The higher, the better for the pitcher.

This chart is updated daily as probable starters are constantly changing with game postponements, injuries, and other events.

Week 21 Start/Sit Recommendations

Updated start/sit recommendations for this week's MLB games. If you cannot see the chart below, click here to see the start/sit grid on a separate page:

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