There are two hitting stacks that stand out as strong plays against ineffective pitching. The first is the Nationals against Adam Morgan. Morgan has a 6.50 ERA and 5.61 FIP on the season and is allowing a .323/.368/.629 line to right handed batters. That is an OPS against of almost 1.000. He's also been below average against lefties, allowing a .288/.341/.430 line to LHB. The Phillies back Morgan up with the 5th worst bullpen by ERA at 4.75.
Right handed batters in the Nationals lineup will be the targets. Jayson Werth ($3,900) has been hitting 2nd in the order and has hit LHP to an elite 179 wRC+ and .280 ISO this season. Catcher Wilson Ramos ($3,200) has hit LHP to a 152 wRC+ and .311 ISO and stands out as a bargain. Anthony Rendon ($3,600) has a 133 wRC+ and .157 ISO vs LHP. The Nationals also get a park upgrade in Philadelphia.
The second stack is the Cardinals against Matt Garza. The Cardinals have been a top 5 offense vs RHP this season and Garza has been below average, posting a 4.89 ERA and 4.52 FIP. He is allowing a poor .306/.384/.493 line to left handed batters this season. Matt Carpenter ($4,300) has hit RHP to a 160 wRC+ and .296 ISO this season and is the strongest play in the stack.