As we approach Week 4 of the fantasy baseball season, savvy managers are already assessing trade opportunities. Notably, Julio Rodríguez of the Seattle Mariners, despite a slow start, shows promise with six extra-base hits and five stolen bases early on. His historical performance suggests he could rebound dramatically. Ian Happ from the Chicago Cubs is also a prime buy-low candidate, with an impressive track record suggesting he’ll find his rhythm soon. Conversely, Marcus Semien of the Texas Rangers is looking overvalued with his poor start, making him a potential sell candidate. Similar caution applies to Mitchell Parker of the Washington Nationals, whose early success may not be sustainable due to low strikeout rates and high hard-hit percentages.