- Jan 1 70th Orange Bowl: #10 Miami (FL) beats #9 Florida State, 16-14
- Jan 1 90th Rose Bowl: #1 Southern California beats #4 Michigan, 28-14
- Jan 1 St. Louis head coach Joel Quenneville records his 300th NHL win with the Blues, a 5-2 victory over the Edmonton Oilers at Savvis Center, St. Louis; Quenneville is Blues coaching games and wins leader
- Jan 2 33rd Fiesta Bowl: #7 Ohio State beats #8 Kansas State, 35-28
- Jan 3 Panthers kicker John Kasay ties NFL-playoff record with 5 field goals to lead Carolina to a 29-10 win over Dallas Cowboys in the Wild Card round of playoffs in Charlotte, North Carolina
- Jan 4 College Football, 6th BCS National Championship, Louisiana Superdome, New Orleans: #2 LSU beats #1 Oklahoma, 21-14 at 70th Sugar Bowl
Hopman Cup
Jan 10 Hopman Cup Tennis, Perth: Lindsay Davenport & James Blake beat Slovakian pair Daniela Hantuchová & Karol Kučera 6-2, 6-3 for a 2-1 win, and 3rd American title
- Jan 11 "4th and 26", trailing Green Bay Packers by 3 in NFC Divisional Playoff Game, Philadelphia Eagles face 4th and 26 on their final drive, Donovan McNabb hits Freddie Mitchell for 29 yards. Eagles tie the game and go on to win in overtime
- Jan 11 Washington Capitals' German goaltender Olaf Kölzig records his 32nd NHL career shutout in a 1-0 win against the visiting Edmonton Oilers
- Jan 13 Toronto's Tom Fitzgerald and Gary Roberts become first teammates in NHL history to play their 1,000th NHL game on the same night as the Maple Leafs beat the visiting Calgary Flames, 4-1
- Jan 18 AFC Championship, Gillette Stadium, Foxborough: New England Patriots beat Indianapolis Colts, 24-14
- Jan 18 NFC Championship, Lincoln Financial Field, Philadelphia: Carolina Panthers beat Philadelphia Eagles, 14-3
- Jan 21 Minnesota Wild set an NHL record for 2 fastest goals, when Jim Dowd and Richard Park score just 3 seconds apart in the final 15 seconds of a 4-2 win over visiting Chicago Blackhawks
Henin wins All-Belgian Final
Jan 31 Australian Open Women's Tennis: In an all-Belgian final, Justine Henin beats Kim Clijsters 6-3, 4-6, 6-3 to win her only Australian title
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