Ian Seymour - Fantasy Baseball Prospects Waiver Wire Stashes (Week 10)

Ian Seymour is a fantasy baseball waiver wire stash for Week 10 (2025). Target Ian Seymour as a top prospect free-agent waiver wire pickup for fantasy baseball.

BALLER MOVE: Add in 14-team leagues

CALL-UP ETA: July

ANALYSIS: While the Rays do not have a clear opening for pitching prospect Ian Seymour at the moment, he is worth stashing in deeper leagues, given his elite strikeout upside. Through 55 innings at Triple-A this season, the left-hander has struck out an impressive 78 batters across 55 innings. Across this stint, he has held a 3.11 ERA with a 1.22 WHIP.

Seymour has tallied at least eight punchouts in seven of his 11 outings. He has hit the double-digit mark in two, including his most recent start against Triple-A Memphis.

Ian Seymour (TB) is one of the most underrated pitching prospects in baseball!

His fastball and changeup combo has stumped AAA this whole season and his cutter remains a strong supplementary offering pic.twitter.com/XxCsU5oJBR

— Thomas Nestico (@TJStats) April 23, 2025

During his first taste of Triple-A last summer, Seymour tallied just 63 punchouts (in a near-dientical 54 innings). However, he was slightly more effective, holding a 2.33 ERA with a 1.15 WHIP.

Currently, Zack Littell holds the No. 5 spot in the Tampa Bay rotation and was one of the most consistent pitchers in May, holding a 2.88 ERA with a 0.98 WHIP. As a result, Seymour will have to wait for an injury. However, if a Rays pitcher were to go down, Seymour would be viewed as a priority target in all standard leagues.

- Written by Andy Smith

Top Prospect Rankings and 2025 Call-Up ETAs

You can also check out RotoBaller's fantasy baseball prospect rankings for 2025. Eric Cross updates the below rankings weekly for the top impact prospects for 2025, and when they may be called up:

Top Prospect Dynasty Rankings

Looking for longer term fantasy baseball prospect rankings? You can also check out RotoBaller's top dynasty prospect rankings from Eric Cross:

Popular Player Comparison Searches - Who To Pickup?

Below are some popular searches and comparisons from our fantasy baseball Who To Pickup tool for Ian Seymour and others. You can also use the free Who Should I Pickup tool to run your own waiver wire comparisons, up to four players at once:

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