As the MLB season heats up, fantasy managers need to keep a close eye on emerging players and strategic matchups. Nick Kurtz, the Athletics' top prospect, is set to debut this week after an impressive Triple-A stint, boasting a .367 batting average and seven home runs in just 14 games. His performance could make him a valuable asset for fantasy teams looking for a spark.

Meanwhile, Sal Frelick of the Milwaukee Brewers has been a breakout star, batting .378 and displaying speed with five stolen bases this April. His under-rostered status at just 34% in Yahoo leagues makes him a prime target for fantasy owners. Lastly, Craig Yoho, another Milwaukee prospect, brings a strong changeup and an impressive minor league ERA, making him a potential addition for managers in need of bullpen help.