Heading into Week 12 of the 2025 fantasy baseball season, five notable players are under scrutiny for their performance. Tyler Mahle of the Texas Rangers had an impressive start with a 1.47 ERA but has since struggled, currently on the injured list with shoulder soreness. Despite this downturn, he should be held in most leagues due to potential recovery.

Matt Shaw from the Chicago Cubs showed promise after a Triple-A stint but has recently hit a slump, suggesting a possible drop if he doesn't regain form. Lars Nootbaar of the St. Louis Cardinals has been in a significant slump and may warrant being dropped. Kansas City Royals prospect Jac Caglianone is not producing at the MLB level yet but should be held due to his strong minor league performance and potential upside.

Lastly, Matthew Liberatore of the Cardinals has seen regression, and fantasy managers should consider trading him while there's still some value, particularly after his next start. The analysis reveals a critical juncture for these players as fantasy managers weigh their options.