Phillies vs. Nationals odds, line, start time, picks, best bets for August 17 matchup from proven model

The Philadelphia Phillies (70-53) and the Washington Nationals (50-73) finish their four-game series with a Sunday matinee. Washington is looking to win its second straight game after picking up a 2-0 win over Philadelphia. Mitchell Parker (7-13, 5.55 ERA) starts for the Nationals, while Aaron Nola (1-7, 6.16 ERA) gets the nod with the Phillies. 

First pitch is scheduled for 11:35 a.m. ET at Nationals Park in Washington. The Phillies are the -198 money-line favorites (risk $198 to win $100) in the latest Phillies vs. Nationals odds, while the Nationals are +166 underdogs (risk $100 to win $166). The over/under for total runs scored is 10 in the latest MLB odds. 

Before you make any Phillies vs. Nationals picks or MLB predictions, you need to see what the SportsLine Projection Model has to say.

The SportsLine Projection Model simulates every MLB game 10,000 times. It enters Week 21 of the 2025 MLB season a profitable 31-23 on top-rated MLB money-line picks. It has excelled making home run prop picks this season, returning nearly 60 units of profit. Anybody following could have seen strong returns!

The model has simulated Phillies vs. Nationals 10,000 times and the results are in. We can tell you the model is going Under on the run total, and it also says one side of the money line has all the value!

Who wins Phillies vs. Nationals, and which side of the money line has all the value? ... Join SportsLine right now to find out which side of the money line you should be all over, all from the model on a 31-23 roll on top-rated MLB money-line picks!