The Diamondbacks and Padres have spent all season in lockstep, and now they meet one last time with the NL Wild Card picture hanging in the balance.
After splitting two games in Mexico City in April, the clubs split four in San Diego in July and then split four more in Arizona in August. That run led Padres manager Craig Stammen to a simple read on the matchup.
“We've played these guys pretty even all year,” he said. “We'll see them again later in the year in a three-game series. Could be the decider of it all.”
It won’t decide everything now that the Padres have clinched a postseason berth, but the three-game set that starts Friday night at Petco Park still carries plenty of weight - especially for Arizona.
The Diamondbacks enter the series two games behind the Phillies for the final NL Wild Card spot. Philadelphia hosts the Rays over the weekend, and Arizona is done if the Phillies win two games or the Diamondbacks lose two games. The path is narrow, and the margin for error is basically gone.
Arizona is also bringing some life into the series. The Diamondbacks have won five straight, including a sweep of the Rockies at Coors Field, and the clubhouse was loose after Thursday’s win. Music was blaring, and the mood was exactly what you’d expect from a team still trying to force its way into October.
“These boys are having fun,” Diamondbacks manager Torey Lovullo said after the game. “Winning is fun.
That's the main thing. When you win, you have fun.
When you execute and do your job, it's a lot of fun, and I want them to feel very spirited. But at the end of the day, tonight when we get on that plane and start gearing up towards San Diego, we got to turn the page and do the same thing tomorrow.”
For Arizona, the formula is straightforward. Win out and hope the Phillies lose two of three to the Rays. Or take two of three from San Diego and hope Tampa Bay sweeps Philadelphia.
The Padres already have a playoff ticket punched, but they still have something real to play for. They’re 49-29 at Petco Park, and they can still secure home-field advantage for a Wild Card Series. That means they won’t be easing into the weekend.
The pitching plans are set up with October in mind.
Arizona has Brandon Pfaadt, Corbin Burnes and Michael Soroka lined up, though Lovullo has been handling games over the last week like they were already in the postseason. If a starter runs into trouble, he’s quick to the bullpen, so long outings probably won’t be part of the script.
San Diego’s plan is more about preserving weapons. Walker Buehler and Casey Mize are expected to start the first two games, though not necessarily in that order.
Buehler could go Saturday and still be lined up to start the third game of a Wild Card Series. Michael King will not start Sunday; the Padres are holding him back to start Game 1 of the Wild Card Series.
The Diamondbacks’ bullpen has become a real strength, and that’s a change from recent years. Since Paul Sewald was removed from the closer’s role and designated for assignment, Arizona has gone to a matchup-based committee.
The late innings now belong to a group that includes left-hander Brandyn Garcia and right-handers Kevin Ginkel, Jonathan Loaisiga, Juan Morillo and Justin Martinez. Taylor Clarke and Dennis Santana have handled the bridge work well, too.
San Diego’s relief corps has been strong for most of the season, but the bigger shift has come with the bats. The Padres spent much of the first half with the worst offense in baseball.
Since the start of September, though, they’ve been the Majors’ best. Fernando Tatis Jr. is mashing.
Manny Machado and Jackson Merrill are producing. Ty France has looked like the signing of the season, and role players such as Dustin Harris and Samad Taylor have chipped in as well.
Arizona’s biggest question mark remains Burnes. He’s coming off Tommy John surgery and still trying to sharpen his command, so Lovullo figures to have a short leash ready if needed.
The offense is another volatile piece. When the Diamondbacks are rolling, they can pile up runs fast.
When they’re not, they’ve had stretches where driving in runners from scoring position has been a problem.
In Other News...
D-Backs Lose Corbin Burnes At The Worst Possible Time
Corbin Burnes is headed to the 15-day injured list with right shoulder inflammation, a frustrating turn for a Diamondbacks rotation that was already trying to steady itself in the seasons final stretch. He was supposed to take the ball for his next scheduled start, but Arizona now has to reshuffle its plans with the last weekend of the year looming.
Burnes has been dealing with a string of setbacks since Tommy John surgery in 2025, and his recent return to the mound did not come with the kind of sharpness the Diamondbacks had hoped for. For a club trying to get through the finish line, losing a pitcher of that caliber at this point forces another round of adjustment, with little time left to sort it out. [Read more 🡒]
Diamondbacks Enter Final Weekend With Their Season Hanging On
Several playoff spots are already spoken for, but the race that matters most in Arizona is still very much alive heading into the final weekend. The Phillies are sitting in front in the National League wild-card chase, yet the Diamondbacks have kept themselves in position by owning the tiebreaker, which gives this stretch run a different kind of urgency than a standard late-September climb.
Seeding across the league may still be shifting, but for the Diamondbacks the focus is simpler: survive and get in. With clubs like the Padres, Cubs, White Sox and Guardians already in, the last open doors are narrowing, and Arizonas path depends on one final push while Philadelphia tries to finish the job first. [Read more 🡒]
Ketel Marte Has Created An Ugly Diamondbacks Problem At Worst Time
Ketel Martes 2026 season has become a far different conversation than the one the Diamondbacks expected to be having about one of their most important hitters. Jayson Stark of The Athletic went so far as to name Marte the National Leagues Least Valuable Player, pointing to both his absence during a series and the downturn in his production at the plate. For a club that has leaned on him for impact in the middle of the lineup, it has been a sharp and unwelcome shift.
The bigger concern for Arizona is that Martes numbers no longer look like those of a player carrying a lineup, but more like those of an average bat after two strong seasons. His on-base percentage, slugging percentage and OPS all fell off, leaving the Diamondbacks with a problem that arrives at the worst possible time. When a player of Martes caliber stops providing that edge, it changes the feel of an offense, and it leaves Arizona trying to sort out how much of the gap is temporary and how much might linger. [Read more 🡒]
