What happened: Yahoo fantasy baseball analyst Fred Zinkie has published a fresh trade guide focused on hitters who specialize in a single scoring category. The piece steers managers toward targeting specific bats to patch a roster's weakest area rather than chasing broad upgrades.

Why it matters: Category-specialist advice matters most in the middle of the season, when standings in rotisserie and head-to-head leagues are often decided by one or two trailing categories. It follows the same Fred Zinkie who recently devoted a column entirely to sell candidates, giving managers both sides of the deadline-trade equation.

What to watch: Watch for managers acting on the buy-low targets as the fantasy trade market heats up toward midseason.