| 06 Sep 98 | r01        | Indianapolis ColtsIndianapolis | 15 - 24 | Miami DolphinsMiami Dolphin |
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| 14 Sep 98 | r02        | New England PatriotsNew England P | 29 - 6 | Indianapolis ColtsIndianapolis |
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| 20 Sep 98 | r03        | New York JetsNew York Jets | 44 - 6 | Indianapolis ColtsIndianapolis |
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| 27 Sep 98 | r04        | Indianapolis ColtsIndianapolis | 13 - 19 | New Orleans SaintsNew Orleans S |
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| 04 Oct 98 | r05        | Indianapolis ColtsIndianapolis | 17 - 12 | Los Angeles ChargersLos Angeles C |
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| 11 Oct 98 | r06        | Indianapolis ColtsIndianapolis | 24 - 31 | Buffalo BillsBuffalo Bills |
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| 18 Oct 98 | r07        | San Francisco 49ersSan Francisco | 34 - 31 | Indianapolis ColtsIndianapolis |
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| 01 Nov 98 | r09        | Indianapolis ColtsIndianapolis | 16 - 21 | New England PatriotsNew England P |
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| 08 Nov 98 | r10        | Miami DolphinsMiami Dolphin | 27 - 14 | Indianapolis ColtsIndianapolis |
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| 15 Nov 98 | r11        | Indianapolis ColtsIndianapolis | 24 - 23 | New York JetsNew York Jets |
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| 22 Nov 98 | r12        | Buffalo BillsBuffalo Bills | 34 - 11 | Indianapolis ColtsIndianapolis |
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| 29 Nov 98 | r13        | Baltimore RavensBaltimore Rav | 38 - 31 | Indianapolis ColtsIndianapolis |
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| 06 Dec 98 | r14        | Atlanta FalconsAtlanta Falco | 28 - 21 | Indianapolis ColtsIndianapolis |
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| 13 Dec 98 | r15        | Indianapolis ColtsIndianapolis | 39 - 26 | Cincinnati BengalsCincinnati Be |
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| 20 Dec 98 | r16        | Seattle SeahawksSeattle Seaha | 27 - 23 | Indianapolis ColtsIndianapolis |
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| 27 Dec 98 | r17        | Indianapolis ColtsIndianapolis | 19 - 27 | Carolina PanthersCarolina Pant |