Week 15 of fantasy baseball brings a host of undervalued hitters primed for a waiver wire pickup. Jurickson Profar of the Atlanta Braves is back from an 80-game PED suspension, quickly showcasing his power. Meanwhile, Miami Marlins' Kyle Stowers has emerged as a serious power threat, boasting impressive stats this season. Detroit Tigers' Zach McKinstry continues to impress with multi-position eligibility and speed, while Tampa Bay Rays' Josh Lowe is heating up after injury, offering both power and speed. Lastly, his teammate Chandler Simpson is turning heads with elite speed and contact skills. All five are underowned but present significant upside for eager fantasy managers.