The 2025 MLB season is revealing a clear divide between the top National League teams and their American League counterparts. Among the rookies making waves, Roki Sasaki of the Los Angeles Dodgers faces early struggles, particularly with his fastball command. Meanwhile, Luisangel Acuña has made a strong impact for the New York Mets, showcasing his speed and contact hitting.

Jackson Jobe of the Detroit Tigers is still refining his pitching arsenal, while Jasson Domínguez of the New York Yankees recently showed promise with a three-homer game. San Diego's Kyle Hart struggled in his debut season, leading to a Triple-A assignment. In Chicago, Matt Shaw was demoted after a rough start, but Cade Horton has stepped up as a promising pitcher. Although the Philadelphia Phillies haven't debuted a rookie yet, Andrew Painter's return from injury is eagerly anticipated.