Start: September 21st at Miami Marlins
ESPN ownership: 56.2%

If you stuck with Luis Castillo through his miserable first half (5.49 ERA, 13.7% strikeouts minus walks in 103.1 innings), there's a good chance you're still working out of a hole in your ratio categories.

Who better to provide some late-season CPR to those categories than ... well, Castillo himself. The Cincinnati Reds' righty has clearly turned a corner, tallying a 2.79 ERA and a 22% strikeout-minus-walk rate since the break, even as his 18% homer-per-fly rate remains a sore spot.

Castillo should continue to work his season-long numbers back towards respectability against a Marlins squad that is MLB's least imposing against right-handers, working a .107 team ISO on 30.4% group hard contact against righties in the second half.