The San Diego Padres welcome the Washington Nationals to Petco Park on Monday, September 7, 2026, with first pitch set for 5:10 PM ET. Nick Pivetta gets the ball for San Diego against Washington's Jake Irvin in what shapes up as a pitching-forward matchup late in the regular season. With the calendar deep into September, every game carries added weight in the standings, and the Padres will look to take care of business in front of their home crowd in the Gaslamp Quarter.

Probable Pitchers: Nick Pivetta vs. Jake Irvin

Pivetta draws the assignment for San Diego. The right-hander takes the mound with the task of keeping the Nationals' offense in check through the heart of their lineup. He'll need to work efficiently and pile up outs early if the Padres want to keep their bullpen fresh during this stretch of the schedule.

On the other side, Jake Irvin gets the nod for Washington. Irvin has been a fixture in the Nationals' rotation and will look to give his club length against a San Diego lineup that carries real firepower from top to bottom.

San Diego Padres Starting Lineup

• Fernando Tatis Jr. — RF (leadoff)
• Jake Cronenworth — 2B
• Manny Machado — 3B
• Ty France — 1B
• Jackson Merrill — CF
• Luis Campusano — DH
• Dustin Harris — LF
• Xander Bogaerts — SS
• Ethan Salas — C

Keys to Watch at Petco Park

Tatis Jr. Setting the Tone

Fernando Tatis Jr. leads off and that alone changes a game's complexion. When Tatis gets on base early and forces a pitcher to work out of the stretch, this entire lineup becomes harder to navigate. Irvin will need to attack the strike zone against him — walking Tatis Jr. and putting him in scoring position ahead of Machado and France is a formula for a long night.

The Heart of the Order

Machado batting third and France cleaning up fourth gives San Diego a right-handed threat followed by a contact-oriented first baseman capable of doing damage in the gap. If Cronenworth gets on base ahead of them, Irvin faces his toughest test in the second and third innings.

Ethan Salas at the Bottom

Keep an eye on Salas hitting ninth. The young catcher has the potential to turn the lineup over and give Tatis Jr. another crack at the plate with a runner on base. A productive bottom third — Harris, Bogaerts, and Salas — can be the difference in a close game.

Pivetta's Command

Pivetta's ability to throw multiple pitches for strikes will determine how deep he goes. If he's locating his fastball and mixing his secondary stuff, the Nationals will have trouble squaring him up at Petco Park, where the spacious outfield and marine layer can suppress offense.

Prediction

The Padres have the lineup depth to put up runs against Irvin, and pitching at Petco Park is always an advantage. Pivetta needs to give San Diego five-plus quality innings, and the lineup — loaded with recognizable names from top to bottom — should do the rest. Padres win, 4-2.