The fantasy baseball landscape continues to shift dramatically as more prospects are being called up, with Chandler Simpson of the Tampa Bay Rays leading the charge. With a batting average of .285 and an impressive 19 stolen bases in just 123 at-bats, Simpson is quickly establishing himself as a valuable asset, particularly in roto leagues where speed is a premium.

In addition to Simpson, Quinn Matthews is back in the conversation following his recovery from injury, showing promise with a 3.19 ERA in the minors. His recent performances suggest he could be a viable option for the St. Louis Cardinals' rotation soon. Meanwhile, Jordan Lawler's struggles upon his return from the minors are concerning, despite his potential.

Other noteworthy mentions include Shaw Manaya, who has had a strong season but is still recovering from injury, and Jefferson Quero, Milwaukee's catching prospect who might see movement in the trade market, making him a name to watch closely.