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Home/MLB/Pittsburgh Pirates @ Chicago Cubs
MLB · 2026-09-13

Pittsburgh Pirates vs Chicago Cubs

Wrigley Field

Pittsburgh Pirates
74-75
VS
Chicago Cubs
83-66
52%
Chicago Cubs win probability · -157
Tale of the tape
48%Win probability52%
0.497Win %0.557
+25Run differential+139
Toss-up-157 · BetRivers
Chicago Cubs to win
The market (61%) rates this higher than our model (52%) — no real edge, so we pass.

Our read leans Chicago Cubs over Pittsburgh Pirates — a 52% win probability once everything is weighed. Essentially a coin flip at 52% — entertainment only, not a spot to press. Pitching matchup: Matthew Boyd (4.03 ERA) vs Bubba Chandler (4.25 ERA).

Why we lean this way

  • Form & record: Chicago Cubs sit 83-66 (0.557), Pittsburgh Pirates 74-75 (0.497).
  • Last 10: Chicago Cubs 5-5 (W2), Pittsburgh Pirates 6-4 (L2). Hot streaks move these lines fast.
  • Run differential: Chicago Cubs +139, Pittsburgh Pirates +25 on the year — the most honest measure of how good a team actually is, beyond their record.
  • On the mound: Chicago Cubs hand the ball to Matthew Boyd; Pittsburgh Pirates counter with Bubba Chandler. Starting pitching swings a baseball game more than any other factor.
  • Home field: worth about +3.5% to Chicago Cubs in our model.

The verdict

Where we land: Chicago Cubs, a near coin-flip. A 52% edge is worth backing, but variance is real — keep stakes reasonable.

Logged to our public track record and graded after the final. We analyze; we never take wagers. 21+.

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