As the fantasy baseball season intensifies in Week 13, savvy managers should target key players who offer significant upside while trading away those likely to regress. Hunter Greene of the Cincinnati Reds, despite his recent injuries, has showcased elite strikeout potential, making him a prime buy-low candidate. Meanwhile, the Detroit Tigers' Spencer Torkelson, with his slow recent performance, still boasts impressive season stats and is on track for a breakout. On the sell-high side, New York Mets pitcher Clay Holmes is due for regression, and both Javier Baez and Xander Bogaerts, despite hot streaks, lack the underlying metrics to sustain their current production.