As we enter Week 12 of the fantasy baseball season, astute managers have a chance to capitalize on undervalued assets. This week, five hitters shine: Willi Castro, Josh Smith, Miguel Vargas, Ryan McMahon, and Sal Frelick. Each of these players has shown potential for significant impact, making them worthy additions to your roster.

Willi Castro of the Minnesota Twins has returned from injury with impressive stats, batting .370 over his last seven games. Josh Smith's versatility and recent performance for the Texas Rangers have made him a key contributor. Meanwhile, Miguel Vargas of the Chicago White Sox is establishing himself as a reliable hitter, while Ryan McMahon is leveraging Coors Field's advantages. Finally, Sal Frelick continues to impress with his solid batting average and base-stealing skills for the Milwaukee Brewers. These players present various opportunities for fantasy managers looking to enhance their lineups as the summer months approach.

The New York Yankees are exploring potential trades as the MLB deadline approaches, particularly for Colorado Rockies third baseman Ryan McMahon. The Yankees' infield has been underwhelming, and acquiring McMahon could address this. Despite a slow start, McMahon has hit seven homers and boasts an .855 OPS in recent games. He is a solid defender and was an All-Star last season, providing a significant upgrade for the Yankees' infield.

With McMahon's arrival, other players could shift positions, improving the team’s overall lineup. Chisholm Jr. could return to second base, enhancing their defensive capabilities. McMahon is under contract until 2027, making him a valuable asset. The Yankees are also considering other infield options, but McMahon stands out due to his combination of power and defensive skills.

On June 16, 2025, a select group of MLB players stands out for prop bets, particularly in the home run market. Brent Rooker has emerged as a power hitter, boasting 15 home runs this season, with a strong matchup against Lance McCullers. Ryan McMahon, while having a less impressive overall season, has recently gained momentum, hitting four homers in his last eight games. Jesus Sanchez is also showing promise against right-handed pitching, making him a solid pick against Mick Abel of the Phillies. Brandon Lowe and Josh Lowe of the Tampa Bay Rays present favorable odds, especially in their respective matchups against Zach Eflin. Each player is in a favorable hitting environment, suggesting potential for profitable bets.

Chase Dollander and the Colorado Rockies faced a tough challenge against Spencer Strider, who dominated the mound for the Atlanta Braves, leading to a 4-1 Braves victory. Strider showcased his elite skills by striking out 13 batters over six innings, allowing only a single run. This performance highlighted his return from Tommy John surgery, proving he is still a force in the National League.

Dollander, despite being a rookie, demonstrated flashes of potential, striking out four and hitting 98.8 mph on his fastball. While he struggled with control, his late-inning composure hinted at a bright future. The game showcased the contrasting stages of their careers, with Strider’s experience overpowering the Rockies’ lineup, which managed a record 19 strikeouts in a game.

As fantasy baseball heats up, Week 12's waiver wire adds feature an exciting mix of emerging talent and steady veterans who can elevate your lineup. Among the top picks are Josh Smith from the Texas Rangers, who has turned his season around with an impressive June, boasting a .378 batting average and showcasing his multi-position eligibility. Jeff McNeil of the New York Mets, quietly having a strong season, has also turned heads with a .333 average over his last 14 games.

Jo Adell from the Los Angeles Angels has found his groove, slashing .346/.424/.788 with seven home runs in a recent hot streak. Evan Carter, also from Texas, is making a strong return, hitting .283 with significant power and speed. Ryan McMahon of the Colorado Rockies is rediscovering his form after a slow start, while Cade Horton from the Chicago Cubs continues to impress on the mound. Finally, Shelby Miller of the Arizona Diamondbacks is stepping into the closer role and should be picked up if saves are needed. These players all present significant upside as we approach the halfway mark of the season.