Cueto doesn't have great career numbers vs. Washington at 6-3 with a 4.06 ERA in 10 starts. But no current Nationals hitters have hit a home run against him. Denard Span is 5-for-10 lifetime though.
After throwing one complete game before this season, Scherzer has three in his past four starts. Scherzer, the National League Pitcher of the Month for May, has made one start against the Reds in his career, a six-inning, one-run affair in 2008.