Two starters with sub-3.6 ERAs are squaring off against lineups that have been held to two runs or fewer in three of the last four games at Wrigley — and Houston is potentially without Yordan Alvarez after a mid-game back spasm Saturday. The total sits at 7.5 with the under at -122, and the pitching profiles tell one story while the Cubs' depleted bullpen quietly tells another.
Houston Astros vs. Chicago Cubs MLB Betting Preview
Sunday's series finale features two starters with sub-3.6 ERAs facing two offenses that can't buy a run right now. The total is sitting at 7.5, with the under priced at -122, and the market is already leaning the right direction. The numbers point toward a suppressed-scoring environment — the honest tension is that combined run projections technically exceed the total, and that deserves a direct answer before placing the bet.
The pitching matchup tilts this toward a low-run game. Shota Imanaga has been limiting damage all season, and Peter Lambert has been quietly effective in a way that doesn't show up on the highlight reel. Neither offense looks capable of a breakout performance right now — and recent series history in this exact park backs that up.
Game Information & Betting Odds
- Matchup: Houston Astros (22-31, AL West) @ Chicago Cubs (29-23, NL Central)
- Date/Time: Sunday, May 24, 2026 — 2:20 PM ET
- Venue: Wrigley Field (Park Factor: 1.02 — slightly hitter-friendly)
- TV: MLB.TV, Marquee Sports Net, Space City Home Network
- Moneyline: Houston Astros +150 / Chicago Cubs -178
- Run Line: Chicago Cubs -1.5 (+125) / Houston Astros +1.5 (-150)
- Total: 7.5 (Over +100 / Under -122)
- Probable Starters: Peter Lambert (HOU) vs. Shota Imanaga (CHC)
- Records: Lambert 2-4, 3.57 ERA | Imanaga 4-4, 3.38 ERA
The Pitching Matchup
Shota Imanaga is the best arm taking the hill in this series finale, and his Statcast profile makes clear why. He's sitting on a 3.375 ERA and 1.04 WHIP across 58.2 innings, with 61 strikeouts and only 16 walks — elite command for any rotation. His four-seam fastball runs at 91.9 mph and accounts for 42.3% of his pitches, holding hitters to a .362 xwOBA. The real weapon, though, is his split-finger: thrown 33.1% of the time, generating a 41.5% whiff rate and a .204 xwOBA against. That's a legitimate put-away pitch, and it's particularly punishing against a Houston lineup that already lacks its most dangerous bat.
Yordan Alvarez — the Astros' best hitter at a 1.010 OPS with 15 home runs — left Saturday's game mid-at-bat with a back spasm and is listed day-to-day. Without Altuve (IL) and with Alvarez potentially sidelined, Houston's projected lineup runs out Jeremy Peña, Isaac Paredes, and Zach Dezenzo at the top. Dezenzo carries a 9.3% barrel rate but a 31.6% strikeout rate — a high-variance profile that Imanaga's split-finger should exploit. Christian Walker (.387 xwOBA) is the legitimate cleanup threat, but he's posted just 3 career plate appearances against Imanaga — an insufficient BvP sample to lean on.
Peter Lambert doesn't generate the same headlines, but the numbers hold up. His 3.566 ERA and 1.08 WHIP across 35.1 innings come with an important detail: only 2 home runs allowed all season. To understand his arsenal, start with the primary pitch: his 4-seam fastball sits at 94.5 mph and accounts for 29.8% of his offerings — that's his most-used pitch and the foundation everything else works off of. From there, the changeup is his best secondary weapon — 20.6% usage, 40.7% whiff rate, and a .191 xwOBA against — a legitimate strikeout offering that neutralizes contact-first hitters. His slider adds another swing-and-miss option at 19.2% usage with a 31.3% whiff rate, and his sinker (10.2% usage, .259 xwOBA) gives him a ground-ball option that plays well against Chicago's lineup, which carries a .238 batting average and .390 slugging percentage.
The Cubs lineup has been ice cold. Nico Hoerner (.313 xwOBA, 1.7% barrel rate) is a contact hitter who makes weak contact against right-handers (.297 xwOBA vs. RHP). Kevin Alcántara carries a 32.5% strikeout rate and 31.9% whiff rate — Lambert's changeup was made for that matchup. The Cubs have been shut out or held to two runs or fewer in three of their last four games, including both contests in this exact series at Wrigley.
But here's the problem: the Cubs bullpen is badly depleted. Harvey, Hodge, Martin, and Merryweather are all on the IL. If Lambert exits before the sixth — and he's averaged fewer than six innings per start this season — middle relief exposure could spike Houston's run total quickly. That's the primary reason this lean stays at two units rather than hammering it.
Prediction
The game script here is two starters eating innings against lineups that have been anemic for the better part of two weeks. Houston scores 4.25 runs per game on the season but their offense has been cold recently — Altuve is out, Alvarez is questionable, and the middle of the order leans on a Dezenzo-Walker combination that Imanaga's split-finger is built to suppress. Chicago's offense (.238 average, .390 slugging) has lost 11 of 13 and was held scoreless Saturday and to just two runs on Friday. The under at -122 reflects a market that's already pricing this correctly — but with both starters capable of keeping the ball in the park (Lambert's 2 HR allowed all season; Imanaga's .204 xwOBA against on his splitter) and two depleted offenses, the case holds.
The Cubs bullpen situation is the legitimate wild card. If this game stays close into the seventh, Houston could pile on against inexperienced relief arms. That's real risk. But the floor here is two quality starters going six-plus in a game that's been a run-suppression showcase all weekend.
Projected final: Cubs 3, Astros 2.
Bet: Under 7.5 (-122) — 2 units