As the fantasy baseball season hits Week 19, managers face tough decisions regarding underperforming players. A mix of established stars and emerging talents, players like Kodai Senga and Paul Goldschmidt have stirred concern among their fantasy owners. Senga, previously a standout for the New York Mets, is struggling post-injury with a concerning ERA and control issues. Meanwhile, Goldschmidt's recent slump leaves many questioning if it's time to part ways. On the other hand, Jake Mangum and James Wood present opportunities for savvy managers to buy low as they navigate through their struggles while still holding potential upside.

Fantasy managers must evaluate whether to hold, drop, or sell low on these players as the playoffs approach. With the season reaching its critical phase, making informed moves can determine league outcomes. Senga and Wood's talent suggests patience may pay off, while Goldschmidt's decline indicates it might be time to cut losses.

Jake Mangum of the Tampa Bay Rays and Kyle Stowers of the Miami Marlins are two players worth monitoring as potential fantasy baseball assets as the 2025 season progresses. Mangum, though a rookie at 29, has shown promising stats with a .301 average, 14 steals, and the potential for 30 stolen bases. His ability to maintain a high average while contributing steals makes him a valuable pickup, especially for those needing help in those categories.

On the other hand, Kyle Stowers has garnered attention with a robust .295 average and 21 home runs, confirming he is breaking out after a slow start to his career. With improved plate discipline and increased power metrics this season, he has the potential to contribute significantly to fantasy rosters. Fantasy managers should keep an eye on both as the season unfolds.

In Week 14 of 2025, several MLB hitters have emerged as intriguing fantasy prospects, particularly from the Milwaukee Brewers and the Pittsburgh Pirates. Caleb Durbin, rostered at 15%, boasts a .375 average with 2 HR and 7 RBI over his last 15 games, demonstrating a knack for scoring runs, although red flags indicate potential regression due to a high BABIP. Teammate Joey Ortiz is also generating buzz with a .326 average over 12 games. Meanwhile, Nick Gonzales from the Pirates is showing promise with a .345 batting average, highlighting his potential as he returns from injury. Lastly, Jake Mangum, while prolific, struggles to maintain consistency in an evolving Rays lineup.

Week 13 of the MLB season brings a host of outfield waiver wire options for fantasy baseball enthusiasts. Notable picks include Lars Nootbaar and Alec Burleson of the St. Louis Cardinals, both thriving during a seven-game week. Nootbaar showcases a strong hard-hit rate, while Burleson's recent performance includes multiple home runs and a high batting average. Jeff McNeil of the New York Mets and Victor Scott, also from the Cardinals, provide versatility and speed, respectively. In the deeper leagues, keep an eye on Jake Mangum of the Tampa Bay Rays and Luke Raley from the Seattle Mariners, both of whom offer potential upside as they re-enter their teams' lineups.

Assessing the matchups this week, teams like the Braves and Cubs are set for extended play, making their players prime streaming candidates. With six teams scheduled for seven games, maximizing plate appearances is crucial for fantasy success. Players like Matt Wallner of the Minnesota Twins and Harrison Bader present power-speed combinations, essential for fantasy rosters. As the season progresses, monitoring these emerging talents could provide significant boosts to your fantasy squad.

As we move into June, the focus shifts to assessing player performance and identifying potential game-changers available on the waiver wire. With the market becoming increasingly sparse, several players under 40% rostered on Yahoo leagues have emerged as promising additions.

Nick Kurtz of the Oakland Athletics, recently returned from an oblique strain, is displaying immense potential with his impressive bat speed. Despite some contact issues, his recent performance suggests a possible breakout. Meanwhile, David Festa from the Minnesota Twins has shown flashes of brilliance with a 95 mph fastball and strong secondary pitches but needs to improve his command for a consistent impact. Lastly, Jake Mangum of the Tampa Bay Rays is carving out a niche with a solid batting average and speed on the basepaths, making him a worthwhile pickup for teams in need of depth.