In Major League Baseball, trade candidates often include players approaching free agency who are performing well for teams that have fallen out of contention. These players, frequently referred to as 'rentals,' are typically expected to make only a brief appearance with their new team before entering the free-agent market. They can enhance a contender's roster while simultaneously elevating their own market value before free agency. Last summer, notable rental players included Jack Flaherty (traded from Detroit to Los Angeles), Yusei Kikuchi (Toronto to Houston), Tanner Scott (Miami to San Diego), Carlos Estévez (Los Angeles to Philadelphia), and Jesse Winker (Washington to New York).

As trade talks intensify leading up to the 2025 MLB trade deadline, a ranked list of the top 25 rental candidates on the market has been compiled based on their current performance, potential impact, remaining club control, and likelihood of being traded. Before delving into the ranks, it's essential to highlight some honorable mentions that provide a broader perspective on the players who might be available. Some notable figures include Jarren Duran and Mitch Keller, as well as a selection of non-rental targets.

Among the top players, Shelby Miller of the Arizona Diamondbacks stands out, having shown impressive performance with a 1.98 ERA and 10 saves, although his recent injury raises concerns about his availability. Other notable players include Michael Lorenzen from the Kansas City Royals, who logged significant innings last season but is currently facing an oblique strain. Cedric Mullins of the Baltimore Orioles, while struggling with his offensive performance, holds notable power and speed that could appeal to teams seeking a change of scenery. Josh Bell, now with the Washington Nationals, continues to provide solid power numbers, and veteran Charlie Morton of the Baltimore Orioles has regained form after an early-season slump, showcasing his playoff experience. The list also includes several other impactful players who could be instrumental for contenders as they look to bolster their rosters.

The market features pitchers like Danny Coulombe of the Minnesota Twins, who has displayed an extraordinary level of effectiveness this season with a stellar 0.63 ERA, and Ryan Helsley of the St. Louis Cardinals, known for his powerful pitching and previous year of success as a closer. Slugger Eugenio Suárez, now leading the National League in home runs, represents one of the most sought-after bats in the market, while the versatile Josh Naylor has established himself after a breakout season. Overall, the trading landscape is dynamic, with a myriad of rental options on the horizon as teams prepare for the upcoming deadline.