Chicago Cubs at San Diego Padres 2026 Wild Card Game 1 Preview: Prediction, Betting Odds & 4 Prop Bets

The Chicago Cubs and San Diego Padres open their best-of-three National League Wild Card Series on Tuesday night at Petco Park. It is a rematch of last October’s series, when the Cubs eliminated San Diego in three closely contested games. This time, the Padres host every game.

San Diego will start Michael King, who went 12-10 with a 3.21 ERA. Chicago has not announced its starter; Matthew Boyd and Kevin Gausman are among its Game 1 candidates. That decision could change both the Padres’ lineup and the best player-prop opportunities.

The Cubs won five of six regular-season meetings, but the Padres enter the playoffs with one of baseball’s hottest offenses. Game 1 should reveal which trend matters more.

Game Information

Matchup: Chicago Cubs at San Diego Padres Series: National League Wild Card Series, Game 1 Date: Tuesday, September 29, 2026 First pitch: 10:00 p.m. ET TV/streaming: NBC Sports Network and Peacock Venue: Petco Park — San Diego, California Probable starters: Chicago TBD; San Diego Michael King Moneyline: Padres approximately -121; Cubs approximately +101 Run line: Padres -1.5; Cubs +1.5 Over/Under: 7.5 runs

The listed prices are a snapshot and can change before first pitch, particularly when Chicago announces its starter. MLB confirms the schedule and pitching plans; an opening-odds report lists San Diego as a narrow favorite with a 7.5-run total.

Chicago Cubs: Can Pete Crow-Armstrong Set the Tone?

Pete Crow-Armstrong enters October after becoming the seventh player in MLB history to record at least 40 home runs and 40 stolen bases in one season. MLB’s late-season preview listed him at 45 homers and 41 steals, making him Chicago’s most dangerous combination of power and speed.

The Cubs need that threat immediately against King. If Crow-Armstrong reaches base ahead of Seiya Suzuki, Michael Busch and Alex Bregman, Chicago can create scoring opportunities without relying solely on solo home runs.

Bregman is an important part of that equation. He recently returned after suffering facial fractures when a foul ball struck him, then homered in each of his first two at-bats in Sunday’s game. Chicago must decide whether to use him at third base or designated hitter, but his bat appears ready for the postseason.

The pitching decision remains open. Boyd finished 10-5 with a 3.91 ERA, while Gausman went 9-12 with a 4.51 ERA and has been dealing with soreness in his non-throwing shoulder. Manager Craig Counsell has options, but the choice carries real weight against a Padres lineup that finished September in excellent form.

San Diego Padres: Michael King Gets Game 1

The Padres have made their most important pitching decision: King takes the ball Tuesday.

King’s 3.21 ERA reflects the stability he gave a rotation that dealt with uncertainty throughout the summer. San Diego is asking him to establish control early and hand a lead to a bullpen aligned for the postseason.

The offense gives him support. Fernando Tatis Jr. hit 20 home runs after the All-Star break and finished with 25. Manny Machado hit his 30th homer on Saturday, and Jackson Merrill has also been swinging well. Since the start of September, San Diego’s offense is tied for the best in baseball by wRC+, according to MLB’s series preview.

The Padres also know exactly how they want to finish a close game. Adrian Morejon is positioned to set up Mason Miller, who is expected to handle the ninth inning. That makes an early lead particularly valuable for San Diego.

Four Prop Bets to Consider

Confirm the posted prop lines and starting lineups before first pitch. Chicago’s unannounced starter could affect hitter prices, while pitcher strikeout lines can move.

Prop Bet #1: Michael King Over 4.5 Strikeouts

DraftKings

4.5/5

Tip: King Over 4.5 Strikeouts

• 3.21 ERA
• Confirmed Game 1 Starter
• 4.5 Strikeout Line

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King is confirmed for Game 1, removing the biggest uncertainty from this pitcher prop. A current odds listing offers his strikeout total at 4.5, a threshold he can clear with five.

The Cubs have hitters capable of making him work, so a quick hook is the principal risk. But if King pitches into the sixth inning, he should have enough opportunities to reach five strikeouts. San Diego’s rested bullpen gives its manager options without requiring him to pull King at the first sign of trouble.

Prediction: Michael King — 6 strikeouts

Prop Bet #2: Pete Crow-Armstrong to Record a Hit

FanDuel

4.6/5

Tip: Crow-Armstrong to Record a Hit

• 40-Home Run, 40-Steal Season
• Projected Leadoff Hitter
• Cubs Offensive Catalyst

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Crow-Armstrong is projected to lead off for Chicago. That spot should give him as many chances as anyone in the Cubs’ lineup to record a hit, and his historic power-and-speed season makes him a threat whenever he puts the ball in play.

King is a difficult matchup, so I prefer the simpler hit prop to a home-run or stolen-base prediction. One single is enough, and getting aboard would also give Crow-Armstrong a chance to affect the game with his speed.

Prediction: Pete Crow-Armstrong records at least one hit

Prop Bet #3: Fernando Tatis Jr. to Record a Hit

Caesars

4.4/5

Tip: Tatis to Record a Hit

• 20 Second-Half Home Runs
• Projected Near Top of Lineup
• Strong Finish

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Tatis rediscovered his power in the second half, hitting 20 home runs after the All-Star break. MLB projects him at the top of San Diego’s Game 1 order, although the final lineup may change depending on Chicago’s starter.

That uncertainty makes a hit prop more appealing than a more demanding power prop. Tatis can produce with a single or an extra-base hit, and a leadoff role would increase his chance of receiving an additional plate appearance.

Prediction: Fernando Tatis Jr. records at least one hit

Prop Bet #4: Alex Bregman to Record a Hit

BetMGM

4.5/5

Tip: Bregman to Record a Hit

• Returned to Lineup
• Two Sunday Home Runs
• Postseason Experience

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Bregman’s quick return is a significant boost for Chicago. After the frightening foul-ball injury, he was back in the lineup as a designated hitter and homered in each of his first two at-bats Sunday.

King will be tougher to solve, and Bregman’s final defensive assignment is still uncertain. But if he is in the starting lineup, one hit is a reasonable target for a veteran whose bat has already shown life since his return.

Prediction: Alex Bregman records at least one hit

Players to Watch

Michael King — San Diego Padres

King gives the Padres a confirmed, dependable Game 1 starter. His task is to keep Crow-Armstrong off base, limit damage from Chicago’s middle order and pitch deep enough to set up San Diego’s late-inning relievers.

Fernando Tatis Jr. — San Diego Padres

Tatis finished with 25 home runs after hitting 20 in the second half. His ability to start a rally or deliver an extra-base hit makes him one of the Padres’ most important offensive players Tuesday.

Pete Crow-Armstrong — Chicago Cubs

A 40-homer, 40-steal season makes Crow-Armstrong dangerous in several ways. Chicago needs him creating pressure at the top of the order, especially against a Padres bullpen built to protect late leads.

Alex Bregman — Chicago Cubs

Bregman’s return gives the Cubs another proven middle-order bat. His two homers Sunday were encouraging, but Game 1 will be a more demanding test against King and San Diego’s relief corps.

Keys to the Game — Chicago Cubs

The Cubs must make King work. Long at-bats from Crow-Armstrong, Suzuki and Busch could raise his pitch count and give Chicago more chances before the Padres reach Morejon and Miller.

Chicago also needs to defend the way it has all season. According to MLB, the Cubs set Statcast-era single-season marks for both Fielding Run Value and Outs Above Average in 2026. In a game projected to be close, one run saved in the field could be decisive.

Finally, Counsell needs a clear pitching plan once his starter is announced. San Diego’s offense has been excellent in September, so waiting too long to address an unfavorable matchup could turn a one-run game into a larger deficit.

Keys to the Game — San Diego Padres

San Diego wants King to control the first half of the game and its bullpen to control the second. The Padres have Morejon and Miller lined up for the final innings, giving them a strong path to a win if they can take a lead into the seventh.

The Padres must also carry their September offense into October. Tatis, Machado and Merrill have been swinging well, and San Diego’s lineup has been among baseball’s best over the final month. That matters against a Cubs club that won five of their six regular-season meetings.

Home field is the other advantage. Last year’s Wild Card Series took place at Wrigley Field; this entire best-of-three series will be played at Petco Park.

Betting Prediction

The market makes San Diego a narrow favorite, and I agree with that assessment. King is the confirmed starter, the Padres have home field, and their offense finished the season strongly. Chicago’s 5-1 record against San Diego this year keeps the matchup close, particularly with Crow-Armstrong and Bregman in its lineup.

My lean is Padres moneyline. I would take the Cubs on the +1.5 run line, however, because these clubs played an exceptionally close Wild Card Series last year and Chicago has the defense to keep a low-scoring game within reach.

At 7.5 runs, I lean under. King should give San Diego a solid start, and both clubs have ways to manage a narrow lead late. Chicago’s starter announcement could change that view, so it is worth checking before first pitch.

The Verdict

The Cubs have earned confidence from their regular-season success against San Diego, and Crow-Armstrong gives them a player capable of changing Game 1 in an instant.

King and the Padres’ late-inning bullpen give San Diego a slight edge at home. I expect another tense game between these teams, decided by one run.

Final Prediction

San Diego Padres 4, Chicago Cubs 3

San Diego takes Game 1 behind King and its bullpen, while Chicago covers the 1.5-run line in a game that stays under the listed total.