Matt's must-start fantasy football waiver wire defenses (D/ST) to stream and start for Week 12 of the 2025 season. His fantasy defense start 'em, sit 'em picks.

The fantasy season keeps ticking away, and for those of you in the playoff hunt, every roster move is of the utmost importance. D/ST decisions can be tough, but RotoBaller analyst Matt Donnelly shares his fantasy football must-start defenses (D/ST) for Week 12 of the 2025 season.

We've got your back with top Week 12 D/ST streamer options to give you the tools needed to set those winning lineups and dominate your matchups on the way to the fantasy playoffs!

Be sure to tune into RotoBaller Radio on SiriusXM (channel Sirius 210, XM 87) - every weekday morning at 6:00 AM ET. You can also find new weekly shows on YouTube , Spre

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