Source -- Steelers add 2nd Watt brother, FB Derek - ESPN
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How Much Have the Watt Brothers Earned Playing Football?
Steelers sign fullback Derek Watt
Watt brothers reunite in Week 3's Texans-Steelers matchup
The Watt Brothers: Everything to Know About the NFL Family
Fullback Derek Watt joins brother T.J. with Steelers
I could never ask or wish for that': Steelers bring tight-knit Watt clan even closer
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Derek Watt Reportedly Agrees to Contract with Steelers; Joins Brother T.J., News, Scores, Highlights, Stats, and Rumors
The Watt Brothers: Everything to Know About the NFL Family