As the All-Star break approaches, savvy fantasy baseball managers are assessing their lineups for potential playoff success. Week 15 brings several under-the-radar waiver wire picks who can greatly enhance your roster, especially in light of injuries or the need for temporary fill-ins. Players like Tyler Freeman of the Colorado Rockies, who boasts strong run production as the leadoff hitter, and Evan Carter of the Texas Rangers, who has shown impressive speed and power recently, are notable options. Their low ownership percentages make them worthy targets for managers looking to boost their teams without significant FAAB impacts.

Nolan Schanuel from the Angels continues to impress with his gradual improvements, while Caleb Durbin of the Brewers has been heating up since becoming a full-time starter. Lastly, rookie Colson Montgomery from the White Sox has made a splash in his recent call-up, showcasing his potential as a high-risk, high-reward addition. With these players, now is the time to act on the waiver wire and optimize your roster for the critical stretch run.