On most Xfinity systems in the Seattle/Tacoma area, Mariners games on the new Mariners TV channel are on channel 1261 in HD.

Quick Scoop: What channel is the Mariners game on Xfinity?

  • For Comcast Xfinity customers in the Seattle market, Mariners TV is listed as channel 1261 for Mariners games.
  • This channel carries the regular-season Mariners TV broadcasts except when a game is exclusively on a national network like FOX, ESPN, or Peacock.
  • If you’re outside the Seattle/Tacoma region or in a different Xfinity footprint, the exact channel number can vary by ZIP code, so you may need to use the Mariners’ online channel finder or Xfinity’s on‑screen guide.

How to quickly confirm on your TV

  1. Press the Guide button on your Xfinity remote.
  2. Search for “Mariners” or “Mariners TV” in the guide.
  1. Note the HD channel that lists the current Mariners game; in Seattle it should show as 1261.

TL;DR: If you’re in the Seattle/Tacoma Xfinity area, tune to channel 1261 for the Mariners game; if that doesn’t show it, use the guide or the Mariners channel finder with your ZIP code to confirm your local listing.

Information gathered from public forums or data available on the internet and portrayed here.