3 numbers that stand out in the Chicago Cubs’ 9-game winning streak: ‘It’s pretty special’

“I’m not the type of person to believe something you can’t physically see,” pitcher Shota Imanaga told reporters through interpreter Edwin Stanberry after Thursday’s win. “But I feel like at Wrigley, there’s this power that you can’t see, but you can kind of feel where it’s like with the fans and the cheering, where the other team feels the pressure if you’re on the mound or if you’re up to bat.

“And then on the other side, when we’re up to bat or if we’re pitching, you feel that extra push and support of this power you can’t see. I think there is something there.”

The Cubs just completed their second 7-0 homestand this year — the first time they’ve accomplished that feat in a single season since 1880, according to team historian Ed Hartig.

A pair of four-game sweeps against the Philadelphia Phillies and Reds, both coming at Wrigley, marks the first time the Cubs have recorded multiple four-game sweeps in a season since 2018, when they did it three times against the Milwaukee Brewers, New York Mets and Reds. The last time the Cubs had at least two four-game sweeps within their first 38 games was 1920.

“It’s pretty special,” left fielder Ian Happ said Thursday. “Four-game sweeps in the big leagues is really hard. Any sweep’s tough, but four games is pretty impressive. Our ability to do it in a bunch of different ways (has) been the most impressive part and (with) contributions from all over the place.”

2. 2.83 rotation ERA

The injury blows haven’t stopped for the Cubs.

The rotation already had been tested with Cade Horton out for the season after elbow surgery and Justin Steele’s return from April 2025 elbow surgery, initial targeted for late May/early June, getting delayed until potentially after the All-Star break because of a flexor strain. Then Matthew Boyd needed surgery on the meniscus in his left knee this week, sustaining the injury while playing at home with his kids.

The Cubs rotation keeps stepping up, though. Its collective 2.83 ERA during the nine-game winning streak is second-best in the majors in that span. Left-hander Shota Imanaga has been everything the Cubs have needed to set the tone. He has allowed just one run, on a homer, in 13 innings over his last two starts while striking out 15 and walking four. Imanaga has lowered his season ERA to 2.28 in eight starts, giving up one run or fewer in six of those games.

It hasn’t fallen solely on Imanaga’s shoulders to keep the staff rolling. Cubs starters’ 54 innings pitched over the last 10 days are the second-most by a big-league rotation. They’ve been able to put together strong innings in part by shutting down opponents’ chances when they do get on base — an MLB-leading 92.2% left-on-base percentage during this stretch — aided by an elite defense.

The Cubs will need continued consistency from Edward Cabrera, Jameson Taillon and Colin Rea to get through this stretch without Boyd and Steele.

3. 52 runs scored

As one of the best offenses in baseball, the Cubs can beat teams in a variety of ways.

The offensive versatility has been on display, especially their ability to win close games. Five of the wins during the nine-game streak were decided by one run, including three straight walk-offs Monday through Wednesday.

The three walk-off wins against the Reds was just the fourth time in franchise history the Cubs recorded three walk-off victories versus the same opponent, according to Elias Sports Bureau. It previously occurred in 1943 and 1932 against the New York Giants and 1932 against the Boston Braves.

Led by hot stretches from Happ (193 weighted runs created plus), first baseman Michael Busch (202 wRC+), center fielder Pete Crow-Armstrong (171 wRC+) and right fielder Seiya Suzuki (120 wRC+), the Cubs’ 52 runs scored over their last nine games trail only the Yankees (59), and they own the third-highest on-base percentage (.358) and wRC+ (124).

Crow-Armstrong has slugged more home runs (three) during this nine-game winning streak than he hit in his first 29 games (one).

“I just expect he and Michael to get hot here at some point soon,” Hoyer said at the start of the homestand of Crow-Armstrong and Busch. “That’s the thing I like about our offense the most is Nico (Hoerner has) carried us early. He’s not going to keep up that pace, but you know that when he comes down a little bit, we have other guys who sort of haven’t hit their stride yet.

“I look at Pete and Michael in that vein. It’s a matter of time until those guys break out, and when they do, both those guys have a chance to get hot and carry us for a while with their talent.”