The Seattle Mariners' most intriguing prospect is also their most valuable trade asset. With a seller's market for starting pitchers this winter, the team must carefully consider its options. Shane Baz, with a 4.25 ERA over 286 innings in four big league seasons, recently traded for four prospects from the Orioles. This is just one of many trades and free agent contracts that teams are making to strengthen their rotations. The Mariners, known for their strong starting pitching talent, are a prime example of a team with a lot to offer. Their five big league starters are highly sought after, and despite the front office's intention to keep them, other teams are still interested in acquiring players like Bryce Miller or Luis Castillo. But the Mariners' interest in trading extends beyond the big leagues. Three of their minor-league pitchers are ranked in MLB Pipeline's Top 100: Kade Anderson, Ryan Sloan, and Jurrangelo Cijntje. Anderson's ranking is speculative as he has yet to pitch professionally, and Sloan is considered too valuable to trade. However, the focus is on Cijntje, who is reportedly the most expendable of the top pitching prospects. Cijntje, a switch-pitching prospect, started the year with High-A Everett but had underwhelming results, posting a 4.58 ERA and 5.51 FIP. He improved in the second half of the season, pitching to a 2.67 ERA and 3.42 FIP with Double-A Arkansas. However, his numbers suggest he may only be effective in certain matchups. Cijntje's splits show he performs significantly better when throwing right-handed, even with the platoon advantage. The Mariners seem to be moving away from his left-handed side, which is less developed. Despite his flaws, Cijntje is still a valuable right-handed prospect. The Cardinals have inquired about him in potential trades, and the Mariners may consider giving him up to bolster other areas of weakness. With a strong starting pitching depth, the team can leverage their riches in other trades, making Cijntje a potential trade piece rather than a future big league starter.
