Monday night’s Chicago Cubs-San Diego Padres game at Petco Park will somewhat answer a timeless question:

What happens when an immovable force meets an unstoppable object?

OK, it’s not a perfect, apples-to-apples comparison, but the matchup is a tantalizing one.

[READ: Pete Crow-Armstrong continues to shine for Cubs in Los Angeles]

The Cubs boast the game’s best offense — they’ve scored 116 runs, 21 more than the second-place New York Yankees, and average 6.44 per game. They’re coming off a three-game series win over the defending World Series champion Los Angeles Dodgers in which they outscored them 20-5.

The Padres, meanwhile, have raced to an MLB-best 13-3 record on the heels of a strong pitching staff. They enter Monday’s series opener having tossed 34 consecutive scoreless innings, shutting out the Colorado Rockies in a three-game set. It’s the third-longest streak in club history, behind the 37-inning scoreless streak in April 1988 and the 40-inning streak by the 1984 team. That 1984 team beat the Cubs three games to two in the NLCS.

The Cubs just took two out of three at Wrigley Field from the Padres on April 4-6, but that’s been the only blip on the radar for San Diego this season.

Dylan Cease will take the ball Monday, and he’s been the Padres’ worst starter this season by ERA — 7.98 — in 14.2 innings across three starts. That number is inflated after he allowed nine earned runs in four innings in his last outing against the Athletics in West Sacramento, Calif.

But it’s not just San Diego’s rotation that’s thriving. Seven relievers have made six or more appearances this season, and all but one have a sub-1.23 ERA. Alek Jacob is the only one who doesn’t — his ERA sits at 3.12 in 8.2 innings.

The Cubs saw how potent that relief corps is firsthand. Padres manager Mike Shildt turned to righties Jeremiah Estrada, Jason Adam and Robert Suarez in the final three frames of their series finale on April 6. They shut down the Cubs’ offense and allowed the Padres to complete a late-game rally to avoid a sweep.

Of course, this Cubs offense has been very strong this season – but it will be short-handed Monday. Designated hitter Seiya Suzuki is not in the starting lineup as he continues to nurse right wrist pain. Catcher Carson Kelly has a whopping 1.636 OPS but was hit on the hand by a pitch Sunday and exited the game with a contusion. Both are “day-to-day,” per Cubs manager Craig Counsell, and could be available in this series.

“I would describe them both as improved,” Counsell told reporters in San Diego before Monday’s game. “We’ll let them go through everything today, and then kind of see where that puts them for the game. But I think they’re both improving. I guess the worst-case scenario to me would be they’d be available on Friday, but I think we’ll have them available in this series.”