| 11 Sep 66 | r01        | Pittsburgh SteelersPittsburgh St | 34 - 34 | New York GiantsNew York Gian |
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| 18 Sep 66 | r02        | Pittsburgh SteelersPittsburgh St | 17 - 3 | Detroit LionsDetroit Lions |
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| 25 Sep 66 | r03        | Pittsburgh SteelersPittsburgh St | 27 - 33 | Washington CommandersWashington Co |
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| 02 Oct 66 | r04        | Washington CommandersWashington Co | 24 - 10 | Pittsburgh SteelersPittsburgh St |
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| 09 Oct 66 | r05        | Cleveland BrownsCleveland Bro | 41 - 10 | Pittsburgh SteelersPittsburgh St |
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| 16 Oct 66 | r06        | Pittsburgh SteelersPittsburgh St | 14 - 31 | Philadelphia EaglesPhiladelphia |
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| 30 Oct 66 | r08        | Dallas CowboysDallas Cowboy | 52 - 21 | Pittsburgh SteelersPittsburgh St |
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| 06 Nov 66 | r09        | Pittsburgh SteelersPittsburgh St | 16 - 6 | Cleveland BrownsCleveland Bro |
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| 13 Nov 66 | r10        | Pittsburgh SteelersPittsburgh St | 30 - 9 | Arizona CardinalsArizona Cardi |
| 20 Nov 66 | r10        | Pittsburgh SteelersPittsburgh St | 7 - 20 | Dallas CowboysDallas Cowboy |
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| 27 Nov 66 | r12        | Arizona CardinalsArizona Cardi | 6 - 3 | Pittsburgh SteelersPittsburgh St |
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| 04 Dec 66 | r13        | Philadelphia EaglesPhiladelphia | 27 - 23 | Pittsburgh SteelersPittsburgh St |
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| 11 Dec 66 | r14        | New York GiantsNew York Gian | 28 - 47 | Pittsburgh SteelersPittsburgh St |
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| 18 Dec 66 | r15        | Atlanta FalconsAtlanta Falco | 33 - 57 | Pittsburgh SteelersPittsburgh St |