In Week 4 of the 2025 fantasy baseball season, several hitters are primed for waiver wire consideration. Rhys Hoskins of the Milwaukee Brewers stands out with a 23% K-rate and a solid performance against right-handed pitchers, making him a valuable first base option. Gavin Sheets of the San Diego Padres has been crushing righties and is expected to continue his hot streak with favorable matchups. Tyler Fitzgerald is emerging as a must-add second baseman for the San Francisco Giants, while Jorge Polanco and Jonathan India offer steady contributions at second and third base, respectively.

Outfielders TJ Friedl and Sal Frelick are also on the radar, with Friedl benefitting from Coors Field's hitter-friendly environment. Catcher Hunter Goodman is another name to watch, especially with good matchups against left-handed pitchers. As injuries continue to plague the league, these players present opportunities to improve your roster and capitalize on favorable matchups this week.

This week's Waiver Wire Watch highlights key players under 40% rostered in ESPN formats for fantasy baseball. Jonathan Aranda (TB) continues to impress with a .367 average and significant power in recent games, while Tyler Fitzgerald (SF) showcases speed and a hot streak, hitting .353 over his last ten games. Dylan Moore (SEA) benefits from increased playing time due to injuries on his team, hitting .308 and displaying speed potential. Other notable players include Rhys Hoskins (MIL), who is gaining momentum post-injury, and Chandler Simpson (TB), whose speed makes him an enticing add. Sal Frelick (MIL) and Jorge Polanco (SEA) also show promise, solidifying their everyday roles. For deeper leagues, players like Mike Yastrzemski (SF) and Gabriel Arias (CLE) are notable mentions, offering reliable contributions and multi-position eligibility.

As the MLB season approaches, savvy fantasy managers are looking to make crucial roster adjustments. Key pickups across various positions are now available, offering valuable options for those looking to refine their lineups.

First up is Connor Wong of the Boston Red Sox, a catcher with the potential for decent batting average and speed, making him a unique asset for fantasy teams. Christian Encarnacion-Strand from the Cincinnati Reds emerges as a power sleeper, showcasing his solid spring training performance.

Boston Red Sox's Kristian Campbell might take the league by storm after a stellar minor league season. Meanwhile, Houston Astros' Cam Smith is on the rise, showing excellent promise following a trade, and could secure a starting role. The Giants’ Tyler Fitzgerald offers dual-position flexibility just as he prepares to kick off the season as a starter.

Victor Scott II, a dynamic outfielder for the St. Louis Cardinals, is a notable name, boasting impressive speed for potential base steals. For pitching, Landen Roupp of the Giants looks solid after a strong spring, while José Soriano of the Angels is a promising starter given his high strikeout potential. Lastly, Texas Rangers’ Luke Jackson is emerging as a top choice for saves in a revamping bullpen.

This season's fantasy drafts see shortstop being a notably top-heavy position, with Bobby Witt Jr., Elly De La Cruz, Gunnar Henderson, and Mookie Betts going in the first round of most leagues. Not far behind, Francisco Lindor is also a popular pick, often within the top ten. As the first round unfolds, managers can expect to see Trea Turner, Corey Seager, Oneil Cruz, and CJ Abrams taken in the third to fifth rounds.

However, even if these elite shortstops aren’t available, there are solid options later in the draft. Players such as Ezequiel Tovar and Zach Neto offer intriguing upside, with Tovar boasting impressive stats from last year, while Neto has shown potential despite facing injury concerns. Dansby Swanson presents a reliable option with consistent offensive numbers and the ability to swipe bases. Tyler Fitzgerald and Carlos Correa also stand as late-round steals, with Correa demonstrating strong numbers when healthy, and Fitzgerald showcasing speed and power potential. Finally, Bo Bichette is expected to bounce back after a disappointing season, making him a high-reward pick this year.