As the fantasy baseball season progresses, some hidden gems emerge on the waiver wire, promising to outperform their more popular peers. The Chicago Cubs' Matt Shaw, available in 74% of ESPN leagues, has transformed following a Triple-A stint. After struggling initially, he returned with a .360 batting average and improved strikeout rate. Similarly, the Los Angeles Angels' Zach Neto has shown resilience after shoulder surgery, boasting a .284 average with impressive power numbers.

Pittsburgh Pirates' Spencer Horwitz, available in 90% of leagues, is generating buzz due to his plate discipline and potential for growth, even though he may be limited against left-handers. For deeper leagues, the Washington Nationals’ Robert Hassell III represents a post-hype prospect, now getting consistent playing time and the chance to leverage the team’s aggressive base running. The Cubs' Daniel Palencia is a closer in the making, while Jameson Taillon offers two-start potential against weak opponents. Hayden Birdsong, adjusting from relief to rotation, is a deeper league target for his high strikeout rates.