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MLB · Start or Sit

Should I Start Isaac Mattson or George Kirby?

Data-driven MLB fantasy start/sit decision. Recent game logs, trend analysis, and a verdict based on actual performance — not gut feel.

Start this week
George Kirby
Based on recent average (33.1 pts) and trend vs Isaac Mattson (5.5 pts)
Isaac Mattson
SP · SEA · MLB
5.5
avg pts (8g)
2.5
std dev
→ steady
last 4g
Last 5 games
2W21
9W18
6W16
3W15
6W14
VS
▶ Start this week
George Kirby
SP · SEA · MLB
33.1
avg pts (8g)
10.8
std dev
→ steady
last 4g
Last 5 games
51W22
14W19
28W18
40W17
33W15

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Frequently Asked Questions

Should I start Isaac Mattson or George Kirby?
Based on recent performance, start George Kirby. George Kirby averages 33.1 fantasy points over their last 8 games. See the full comparison and trend data on this page.
What is Isaac Mattson's fantasy value right now?
Isaac Mattson has averaged 5.5 fantasy points over their last 8 games this season, with a steady trend. Standard deviation of 2.5 points — a relatively consistent floor.
What is George Kirby's fantasy value right now?
George Kirby has averaged 33.1 fantasy points over their last 8 games this season, with a steady trend. Standard deviation of 10.8 points — some volatility week to week.

More MLB start/sit decisions

MLB Starting Pitcher RankingsMLB Outfielder Rankings Weekly Rankings Isaac Mattson Profile George Kirby Profile