For fantasy baseball managers, Week 4 presents promising opportunities with several key player pickups. Mick Abel of the Minnesota Twins has rebounded from a slow start, throwing 13 scoreless innings in his last two outings, making him a valuable addition as he faces the struggling New York Mets and the Tampa Bay Rays. Meanwhile, Spencer Arrighetti of the Houston Astros is stepping into a full-time role, showcasing an impressive curveball with a 72.7% whiff rate in his debut. The San Diego Padres are also a team to watch, with their hitters benefiting from five games in hitter-friendly environments, including Coors Field and Estadio Alfredo Harp Helú in Mexico City. Other notable pickups include Jeremiah Jackson of the Baltimore Orioles, who has been performing well across multiple positions, and Enyel De Los Santos, who could see save opportunities with the Astros' bullpen in flux. Overall, these players present great potential for both immediate and future contributions.