Seth Lonsway #86
San Francisco Giants
- P
- B/T: L/L
- 6' 0"/206
- Age: 27
- Seth Joseph Lonsway
- Status: Reassigned to Minors
- Born: 10/07/1998 in St. Mary's, OH
- Draft: 2021, San Francisco Giants, Round: 6, Overall Pick: 176
- College: Ohio State
- MLB Debut: 8/29/2026
2026 Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 22 | 1-5 | 5.86 | 81.1 | 50 | 1.78 |
2026 Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 1 | 0-0 | 9.00 | 2.0 | 2 | 2.50 |
MiLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 127 | 21-33 | 4.43 | 500.1 | 463 | 1.52 |
MLB Career Stats
| G | W-L | ERA | IP | SO | WHIP |
|---|---|---|---|---|---|
| 1 | 0-0 | 9.00 | 2.0 | 2 | 2.50 |
| Year | W | L | ERA | G | GS | SV | IP | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|
| 2026 MiLB Stats | 1 | 5 | 5.86 | 22 | 17 | 1 | 81.1 | 50 | 1.78 |
| 2026 MLB Stats | 0 | 0 | 9.00 | 1 | 0 | 0 | 2.0 | 2 | 2.50 |
| MiLB Career Stats | 21 | 33 | 4.43 | 127 | 92 | 4 | 500.1 | 463 | 1.52 |
| MLB Career Stats | 0 | 0 | 9.00 | 1 | 0 | 0 | 2.0 | 2 | 2.50 |
- Next SF Game: 9-11 vs SD
Splits
| Duration | W | L | ERA | G | GS | SV | IP | H | ER | BB | SO | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Last 7 Games | 0 | 0 | 9.00 | 1 | 0 | 0 | 2.0 | 5 | 2 | 0 | 2 | 2.50 |
| Last 15 Games | - | - | --- | - | - | - | --- | - | - | - | - | --- |
| Last 30 Games | - | - | --- | - | - | - | --- | - | - | - | - | --- |
| Last 3 Games | W | L | SV | IP | H | ER | BB | SO |
|---|---|---|---|---|---|---|---|---|
| 8/29 vs AZ | 0 | 0 | 0 | 2.0 | 5 | 2 | 0 | 2 |
2026 :
RP
(1)
More Seth Lonsway
Seth Lonsway In play, out(s) to Trevor Hauver
Seth Lonsway's strong on-hit outing
Lonsway takes no-hit bid into eighth in 7-2 Squirrels win
Seth Lonsway fans a sixth and final batter
Seth Lonsway's strong Double-A debut
Seth Lonsway strikes out his fourth batter of the day
Seth Lonsway ends five strong innings
Emeralds Shutout Hops In Series FinaleÂ
Latest Transactions
| Team | Date | Transaction |
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August 29, 2026 | San Francisco Giants optioned LHP Seth Lonsway to Sacramento River Cats. |
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August 29, 2026 | San Francisco Giants selected the contract of LHP Seth Lonsway from Sacramento River Cats. |
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July 26, 2026 | Sacramento River Cats activated LHP Seth Lonsway from the temporarily inactive list. |
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July 11, 2026 | Sacramento River Cats placed LHP Seth Lonsway on the temporarily inactive list. |
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June 9, 2026 | LHP Seth Lonsway assigned to Sacramento River Cats from Richmond Flying Squirrels. |
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June 7, 2026 | LHP Seth Lonsway assigned to Richmond Flying Squirrels from Sacramento River Cats. |
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May 30, 2026 | Sacramento River Cats activated LHP Seth Lonsway from the 7-day injured list. |
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May 14, 2026 | Sacramento River Cats placed LHP Seth Lonsway on the 7-day injured list. |
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March 13, 2026 | LHP Seth Lonsway assigned to San Francisco Giants. |
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July 29, 2025 | LHP Seth Lonsway assigned to Sacramento River Cats from Richmond Flying Squirrels. |
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February 22, 2025 | LHP Seth Lonsway assigned to San Francisco Giants. |
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September 24, 2024 | Richmond Flying Squirrels activated LHP Seth Lonsway from the 7-day injured list. |
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August 6, 2024 | Richmond Flying Squirrels placed LHP Seth Lonsway on the 7-day injured list. |
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June 25, 2024 | LHP Seth Lonsway assigned to Richmond Flying Squirrels from Eugene Emeralds. |
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September 22, 2023 | Scottsdale Scorpions activated LHP Seth Lonsway. |
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April 4, 2023 | LHP Seth Lonsway assigned to Eugene Emeralds. |
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April 5, 2022 | San Jose Giants activated LHP Seth Lonsway. |
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April 5, 2022 | LHP Seth Lonsway assigned to San Jose Giants from ACL Giants Orange. |
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August 30, 2021 | LHP Seth Lonsway assigned to ACL Giants Orange. |
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July 23, 2021 | San Francisco Giants signed LHP Seth Lonsway. |
+ Show More Transactions