# MLB postseason umpire assignments

> Live situation record from CLSTR: https://clstr.news/situations/mlb-postseason-umpire-assignments
> Updated: 2026-10-11T15:38:21.000Z. Sources: 5. Developments: 2.

Major League Baseball has designated the umpire crew chiefs for successive stages of the postseason.

For the Wild Card Series, the league announced Jordan Baker, Bill Miller, Alan Porter, and Mark Wegner as crew chiefs. The rotation for this round specifies that crew chiefs will be positioned at third base for opening games and will not work behind the plate during the best-of-three series.

As the postseason progressed to the League Championship Series (LCS), Bill Miller and Mark Wegner were named crew chiefs. Miller was assigned to lead the crew for the American League Championship Series (ALCS) between the Tampa Bay Rays and the Cleveland Guardians, while Wegner was assigned to the National League Championship Series (NLCS) between the Milwaukee Brewers and the Los Angeles Dodgers. Both series utilize seven-man crews, with one umpire off during each game.

## Timeline

### 2026-10-11: Bill Miller and Mark Wegner named MLB LCS umpire crew chiefs

Bill Miller and Mark Wegner have been named umpire crew chiefs for the MLB League Championship Series, leading crews for the ALCS and NLCS respectively.

2 sources. https://clstr.news/cluster/bill-miller-and-mark-wegner-named-mlb-lcs-umpire-crew-chiefs

### 2026-09-28: MLB announces umpire crew chiefs for Wild Card Series

Major League Baseball has named Jordan Baker, Bill Miller, Alan Porter, and Mark Wegner as the umpire crew chiefs for the Wild Card Series.

5 sources. https://clstr.news/cluster/mlb-announces-umpire-crew-chiefs-for-wild-card-series

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Cite as: MLB postseason umpire assignments. CLSTR, https://clstr.news/situations/mlb-postseason-umpire-assignments