Week 12 of the fantasy baseball season is a pivotal moment for managers looking to bolster their rosters through trades. With the first half of the season nearing its conclusion, savvy GMs should target underperforming players while selling high on those who have peaked.

The focus this week is on three buy-low candidates: Marcell Ozuna, Steven Kwan, and Brendan Donovan. Ozuna, despite a rough stretch, has strong underlying metrics that suggest a bounce back, making him a prime target for managers seeking power hitters. Kwan, dealing with a wrist injury, has seen a dip in performance but remains a high average contributor with speed on the bases. Donovan, although in a slump, boasts a solid batting average and the potential for significant contributions across multiple categories.

Conversely, it's time to consider moving on from overvalued players like Paul Goldschmidt and Andy Pages. Goldschmidt's recent struggles and potential reduced playing time with Giancarlo Stanton returning make him a sell-high candidate. Pages, while hot, may be due for regression based on his underlying stats, making this a perfect moment to capitalize on his current market value.