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San Francisco Giants vs. Chicago Cubs prediction, pick for Wednesday 8/27/25

San Francisco Giants vs. Chicago Cubs prediction, pick for Wednesday 8/27/25

Published:

By: Dan Johnson

We get Colin Rea, 10-5 with a 3.96 ERA, against Carson Whisenhunt, 1-1 with a 4.91 ERA, at Oracle Park. The matchup reads tighter than the sticker, but the scoring environment trends down. Below, I’ve got my preview, prediction, and best bet for this Wednesday night baseball game between the Brewers and the Mariners.

Here’s how I’ll play it. I’ll be pumping out these predictions for individual games all season, with plenty of coverage here on DraftKings Network. Follow my handle @dansby_edits for more betting plays.

Giants vs. Cubs prediction, preview

Rea’s recent form tightens the screws. He carries a 2.53 ERA across his last four starts and continues to limit barrels with a 1.29 WHIP this season. Chicago’s run prevention travels, supported by a 3.76 team ERA and 1.19 WHIP, and an eight-and-change K/9 baseline that snuffs rallies. San Francisco’s offense doesn’t stretch pitchers; they own a .231 average, .308 OBP, and .377 SLG, producing 4.05 runs per game. Chicago’s bats headline stronger season-long power at .249/.319/.432 with 5.0 runs per game, yet their recent window cools the temperature. Over the last ten, the Cubs have averaged 4.0 runs with an 8.8 K/9 against, which pairs cleanly with an under script.

The Giants’ everyday core carries modest thump; Heliot Ramos sits at 15 homers with a .404 SLG, while Jung Hoo Lee’s impact funnels into 29 doubles and 10 triples, not fences. Chicago’s middle carries juice, but game state reins them in tonight. Kyle Tucker’s last five show a .300 average with three homers, yet San Francisco’s bullpen neutralizes right-left stacks and chokes leverage. Pete Crow-Armstrong’s 28 homers travel, but his power plays best (and sometimes only) in advantage counts; the Giants’ pen shrinks those. Low chase, routine contact, and few free bases keep extra-base volume capped on both sides.

Whisenhunt presents volatility, but the bullpen insulation matters. The rookie’s overall 4.91 ERA hides a harsher home line, with a 7.00 ERA and .270 opponent average at Oracle Park. However, San Francisco’s relief corps cleans footprints with a 3.26 bullpen ERA, absorbing traffic and shortening games. Chicago’s bullpen ranks near the top in holds and save rate, and the staff’s 3.76 ERA compresses late scoring.

Cubs vs. Giants pick, best bet

I hear the pushback already. The Giants lead the season series 4-1 and are 6-1 across the last seven against Chicago. Rea owns an ugly career 8.31 ERA versus San Francisco, and Oracle Park hasn’t been friendly historically. I dismiss the ghost splits and anchor on current signals. Rea’s August sequencing trimmed damage consistently, and San Francisco’s pop profile remains thin: 128 homers and 196 doubles against Chicago’s 178 homers and 216 doubles. When the Giants score, it’s singles-and-doubles chains, which die quickly against strike-throwers and a fresh bridge.

Rea’s recent command trims crooked innings, San Francisco’s lineup lacks efficient lift, and Whisenhunt hands quickly to a trustworthy bullpen. H2H noise and career splits don’t shake me from the fresh data and current run-scoring profiles.

Best bet: Giants vs. Cubs u8.5 total runs (-105)

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Dan Johnson has been an editor, writer, and analyst for DraftKings and DraftKings Network since 2024. He’s previously held editorial posts at The Paris Review, Macmillan Publishers, Bedford/St. Martin’s Press, ASSIGNMENT Magazine, and FantasySixPack. You can find his various editorial work & writing (sports-related and non-) at all of the above.
Disclaimer

I am a promoter at DraftKings and am also an avid fan and user (my username is thegreatdansby9) and may sometimes play on my personal account in the games that I offer advice on. Although I have expressed my personal view on the games and strategies above, they do not necessarily reflect the view(s) of DraftKings and do not constitute a representation that any particular strategy will guarantee success. All customers should use their own skills and judgment in building lineups. I may also deploy different players and strategies than what I recommend above. I am not an employee of DraftKings and do not have access to any non-public information.