Cubs vs Giants Prediction: MLB Game Forecast for June 8

Pitching Edge: Shōta Imanaga vs Logan Webb

The Chicago Cubs hand the ball to Shōta Imanaga, who has been dominant at Wrigley Field this season. His splitter‑fastball combination has neutralized right‑heavy lineups, and he faces a Giants team that ranks 22nd in OPS against left‑handed pitching. Logan Webb, the Giants' ace, has struggled on the road — his ERA away from Oracle Park sits above 4.00, and he has allowed a .290 batting average over his last five starts outside San Francisco.

Imanaga's home ERA is nearly a full run lower than his road split — a decisive factor when Wrigley's wind blows in.

Both pitchers rely on ground‑ball contact, but Imanaga's elite strikeout rate (28.4%) gives him a clear edge in avoiding damage. Webb counters with a sinker that induces weak contact, but the Cubs lineup is built to exploit his vulnerability to pull‑happy lefties.

• Imanaga: 10+ strikeouts in 4 of his past 7 home starts
• Webb: 5.20 ERA in day games this season
• Cubs bullpen: 3.18 ERA since the All‑Star break

The pitching matchup clearly favors Chicago, especially if the Cubs can chase Webb early and get into the Giants' shaky bullpen.

Offensive Trends Favor Chicago's Speed and Power

The Cubs lead the National League in stolen bases, putting constant pressure on Giants catcher Patrick Bailey. Nico Hoerner and Mike Tauchman have combined for 42 steals, and they will test Bailey's 23% caught‑stealing rate. Cody Bellinger and Seiya Suzuki provide the power — they have 38 home runs between them, targeting Webb's tendency to elevate his sinker when behind in the count.

The Giants have allowed 1.2 stolen bases per game over the last month — the third‑worst mark in MLB.

San Francisco's offense has been inconsistent. They score 3.8 runs per game on the road, and against left‑handed starters they slip to 3.4. The Giants' lineup relies on patience (top‑5 in walk rate) but Imanaga's command keeps free passes minimal.

• Cubs: 4th in wRC+ against sinker‑heavy pitchers
• Giants: 25th in ISO against left‑handed pitching
• Wrigley Factor: Sunday day games average 7.2 runs — under the 8.5 total

Expect the Cubs to manufacture runs through small ball early and strike for a big inning once Webb tires.

Bullpen Depth Could Decide Late Innings

Chicago's bullpen has been a strength, anchored by Adbert Alzolay and Julian Merryweather. The duo has a combined 2.87 ERA in high‑leverage spots, and manager Craig Counsell has been aggressive with matchup‑based substitutions. The Giants' relief corps ranks 23rd in ERA over the last 30 days, with a 4.72 mark and a tendency to issue walks when games are tight.

Giants relievers have blown 6 of their last 12 save opportunities — the second‑most in the NL.

If the game is close after seven innings, the Cubs have the tactical edge. Counsell's willingness to use his best arms in the 7th and 8th, rather than saving them for a ninth‑inning closer, has paid dividends. San Francisco's bullpen lacks a reliable shutdown option beyond Camilo Doval, who has struggled with command.

• Cubs bullpen: 3.18 ERA since the All‑Star break (9th in MLB)
• Giants bullpen: 4.72 ERA over the last 30 days (23rd)
• High‑leverage OPS against: Cubs .613, Giants .798

Late‑inning strategy could be the difference in a game expected to be decided by two runs or fewer.

Key Takeaways

• Imanaga's home‑field dominance and Webb's road woes give the Cubs a solid pitching advantage.
• Chicago's running game and power bats are well‑suited to exploit Webb's weaknesses.
• The Giants' bullpen struggles tilt late‑inning scenarios toward the Cubs.
• Expect a low‑scoring affair with the Cubs winning 4–2.
• Betting lean: Cubs moneyline and under 8.5 runs.
• Prediction: Cubs 4, Giants 2.

This matchup echoes recent trends in how technology is shaping baseball's greatest rivalries, where analytics and pitch design continue to tilt games toward teams with deeper bullpens and better platoon matchups. For more on how data drives decision‑making, see how AI and analytics are shaping the game.