The Dodgers are averaging 5.7 runs per nine innings against left-handed pitchers, and the Nationals are averaging 4.3 runs against lefties this season. I expect that high-scoring trend to continue here. Andrew Heaney has a 0.59 ERA, but he will be making his first MLB appearance since June 18. Since he has allowed six runs and four home runs in two minor league starts totaling 7 2/3 innings pitched.
Patrick Corbin was 0-2 with a 11.00 ERA against the Dodgers last season, and has been terrible this season with a 6.02 ERA.
Over is 9-2-1 in Dodgers last 12 games vs. a team with a winning % below .400 and the Over is 4-1 in Nationals last 5 vs. a team with a winning record.