George Kirby

Scouting Profile

George Kirby profiles as a balanced mid-rotation arm. His 7.6 K/9 sits in the contact-oriented end of the spectrum (15th percentile), backed by a 109 Stuff+ that reads as above-average stuff. Command grades at the 80th percentile (2.3 BB/9), above-average control, over a 5.9-inning average workload. Within the SEA rotation he grades as the 4th arm by strikeout rate.

2026 Strikeout Prop Outlook

For strikeout props the baseline lands near 5.0 Ks, but the daily number moves with the matchup: a lineup that whiffs more than average against right-handers pushes it up, a contact-heavy one pulls it down — the L3 opponent split is the single largest swing. Cold air and a pitcher-friendly park add roughly 0.4–0.9 K; a hitter’s park trims the ERA side. A steady 5.9-inning workload gives the counting stats room to accumulate.

Seattle Mariners Rotation