Record: 207-145, .588 W-L% (5th of 32) (Schedule and Results)
*Record does not reflect forfeits or vacated games.
SRS: 11.35 (4th of 32) ▪ SOS: 8.26 (2nd of 32)
Regular Season Champion: Illinois
Tournament Champion: Illinois
NCAA Tournament: 5 (Illinois, Iowa, Michigan State, Minnesota and Wisconsin)
Ranked in Preseason AP Poll: 3 (Illinois, Michigan State and Wisconsin)
Ranked in Final AP Poll: 3 (Illinois, Michigan State and Wisconsin)
| Date | Visitor/Neutral | PTS | Home/Neutral | PTS | OT | Notes |
|---|---|---|---|---|---|---|
| Wed, Jan 5, 2005 | Ohio State | 65 | Illinois | 84 | ||
| Wed, Jan 5, 2005 | Michigan | 65 | Iowa | 63 | ||
| Wed, Jan 5, 2005 | Indiana | 52 | Northwestern | 73 | ||
| Wed, Jan 5, 2005 | Michigan State | 84 | Penn State | 58 | ||
| Wed, Jan 5, 2005 | Wisconsin | 77 | Purdue | 68 | ||
| Sat, Jan 8, 2005 | Wisconsin | 61 | Indiana | 74 | ||
| Sat, Jan 8, 2005 | Northwestern | 58 | Michigan State | 87 | ||
| Sat, Jan 8, 2005 | Penn State | 62 | Minnesota | 83 | ||
| Sat, Jan 8, 2005 | Iowa | 69 | Ohio State | 81 | ||
| Sat, Jan 8, 2005 | Illinois | 68 | Purdue | 59 | ||
| Tue, Jan 11, 2005 | Ohio State | 66 | Wisconsin | 72 | ||
| Wed, Jan 12, 2005 | Penn State | 64 | Illinois | 90 | ||
| Wed, Jan 12, 2005 | Northwestern | 61 | Michigan | 71 | ||
| Wed, Jan 12, 2005 | Purdue | 52 | Minnesota | 63 | ||
| Sat, Jan 15, 2005 | Minnesota | 60 | Iowa | 66 | ||
| Sat, Jan 15, 2005 | Illinois | 78 | Northwestern | 66 | ||
| Sat, Jan 15, 2005 | Michigan | 66 | Penn State | 62 | ||
| Sat, Jan 15, 2005 | Indiana | 75 | Purdue | 73 | 2OT | |
| Sun, Jan 16, 2005 | Michigan State | 59 | Wisconsin | 62 | ||
| Tue, Jan 18, 2005 | Purdue | 64 | Michigan State | 71 | ||
| Date | Visitor/Neutral | PTS | Home/Neutral | PTS | OT | Notes |
| Wed, Jan 19, 2005 | Michigan | 53 | Indiana | 62 | ||
| Wed, Jan 19, 2005 | Minnesota | 60 | Ohio State | 56 | OT | |
| Thu, Jan 20, 2005 | Iowa | 68 | Illinois | 73 | OT | |
| Sat, Jan 22, 2005 | Ohio State | 60 | Indiana | 67 | ||
| Sat, Jan 22, 2005 | Purdue | 57 | Iowa | 71 | ||
| Sat, Jan 22, 2005 | Wisconsin | 72 | Michigan | 61 | ||
| Sat, Jan 22, 2005 | Michigan State | 69 | Minnesota | 55 | ||
| Sat, Jan 22, 2005 | Northwestern | 62 | Penn State | 65 | ||
| Tue, Jan 25, 2005 | Illinois | 75 | Wisconsin | 65 | ||
| Wed, Jan 26, 2005 | Indiana | 65 | Minnesota | 70 | ||
| Wed, Jan 26, 2005 | Iowa | 74 | Northwestern | 75 | OT | |
| Wed, Jan 26, 2005 | Penn State | 62 | Ohio State | 68 | ||
| Thu, Jan 27, 2005 | Michigan | 53 | Michigan State | 64 | ||
| Sat, Jan 29, 2005 | Minnesota | 66 | Illinois | 89 | ||
| Sat, Jan 29, 2005 | Indiana | 57 | Iowa | 72 | ||
| Sat, Jan 29, 2005 | Ohio State | 65 | Northwestern | 52 | ||
| Sat, Jan 29, 2005 | Wisconsin | 76 | Penn State | 50 | ||
| Sun, Jan 30, 2005 | Michigan | 55 | Purdue | 84 | ||
| Tue, Feb 1, 2005 | Illinois | 81 | Michigan State | 68 | ||
| Wed, Feb 2, 2005 | Penn State | 63 | Indiana | 68 | ||
| Date | Visitor/Neutral | PTS | Home/Neutral | PTS | OT | Notes |
| Wed, Feb 2, 2005 | Minnesota | 71 | Michigan | 54 | ||
| Wed, Feb 2, 2005 | Purdue | 65 | Ohio State | 75 | ||
| Wed, Feb 2, 2005 | Northwestern | 58 | Wisconsin | 73 | ||
| Sat, Feb 5, 2005 | Michigan State | 75 | Iowa | 64 | ||
| Sat, Feb 5, 2005 | Wisconsin | 50 | Minnesota | 60 | ||
| Sat, Feb 5, 2005 | Purdue | 61 | Northwestern | 67 | ||
| Sat, Feb 5, 2005 | Michigan | 46 | Ohio State | 72 | ||
| Sun, Feb 6, 2005 | Indiana | 47 | Illinois | 60 | ||
| Tue, Feb 8, 2005 | Illinois | 57 | Michigan | 51 | ||
| Wed, Feb 9, 2005 | Ohio State | 69 | Michigan State | 83 | ||
| Wed, Feb 9, 2005 | Northwestern | 55 | Minnesota | 53 | ||
| Wed, Feb 9, 2005 | Penn State | 50 | Purdue | 77 | ||
| Wed, Feb 9, 2005 | Iowa | 69 | Wisconsin | 72 | ||
| Sat, Feb 12, 2005 | Wisconsin | 59 | Illinois | 70 | ||
| Sat, Feb 12, 2005 | Minnesota | 56 | Indiana | 71 | ||
| Sat, Feb 12, 2005 | Northwestern | 54 | Iowa | 64 | ||
| Sat, Feb 12, 2005 | Michigan State | 64 | Michigan | 49 | ||
| Sat, Feb 12, 2005 | Ohio State | 66 | Penn State | 56 | ||
| Tue, Feb 15, 2005 | Indiana | 44 | Ohio State | 57 | ||
| Wed, Feb 16, 2005 | Minnesota | 62 | Michigan State | 81 | ||
| Date | Visitor/Neutral | PTS | Home/Neutral | PTS | OT | Notes |
| Wed, Feb 16, 2005 | Illinois | 83 | Penn State | 63 | ||
| Wed, Feb 16, 2005 | Iowa | 63 | Purdue | 66 | ||
| Wed, Feb 16, 2005 | Michigan | 50 | Wisconsin | 76 | ||
| Sat, Feb 19, 2005 | Illinois | 75 | Iowa | 65 | ||
| Sat, Feb 19, 2005 | Ohio State | 50 | Minnesota | 52 | ||
| Sat, Feb 19, 2005 | Penn State | 39 | Northwestern | 54 | ||
| Sat, Feb 19, 2005 | Michigan State | 68 | Purdue | 57 | ||
| Sun, Feb 20, 2005 | Indiana | 70 | Michigan | 63 | ||
| Tue, Feb 22, 2005 | Purdue | 62 | Indiana | 79 | ||
| Wed, Feb 23, 2005 | Northwestern | 48 | Illinois | 84 | ||
| Wed, Feb 23, 2005 | Penn State | 48 | Michigan | 63 | ||
| Wed, Feb 23, 2005 | Iowa | 57 | Minnesota | 65 | ||
| Thu, Feb 24, 2005 | Wisconsin | 64 | Michigan State | 77 | ||
| Sat, Feb 26, 2005 | Michigan | 53 | Northwestern | 69 | ||
| Sat, Feb 26, 2005 | Iowa | 78 | Penn State | 56 | ||
| Sat, Feb 26, 2005 | Minnesota | 59 | Purdue | 57 | ||
| Sun, Feb 27, 2005 | Michigan State | 74 | Indiana | 78 | OT | |
| Sun, Feb 27, 2005 | Wisconsin | 64 | Ohio State | 56 | ||
| Tue, Mar 1, 2005 | Indiana | 60 | Wisconsin | 62 | ||
| Wed, Mar 2, 2005 | Ohio State | 72 | Iowa | 74 | ||
| Date | Visitor/Neutral | PTS | Home/Neutral | PTS | OT | Notes |
| Wed, Mar 2, 2005 | Michigan State | 69 | Northwestern | 58 | ||
| Wed, Mar 2, 2005 | Minnesota | 73 | Penn State | 69 | ||
| Thu, Mar 3, 2005 | Purdue | 50 | Illinois | 84 | ||
| Sat, Mar 5, 2005 | Northwestern | 55 | Indiana | 77 | ||
| Sat, Mar 5, 2005 | Iowa | 74 | Michigan | 72 | OT | |
| Sat, Mar 5, 2005 | Penn State | 64 | Michigan State | 90 | ||
| Sat, Mar 5, 2005 | Purdue | 52 | Wisconsin | 64 | ||
| Sun, Mar 6, 2005 | Illinois | 64 | Ohio State | 65 | ||
| Thu, Mar 10, 2005 | Michigan | 56 | Northwestern | 58 | BG10 First Round | |
| Thu, Mar 10, 2005 | Ohio State | 72 | Penn State | 69 | BG10 First Round | |
| Thu, Mar 10, 2005 | Iowa | 71 | Purdue | 52 | BG10 First Round | |
| Fri, Mar 11, 2005 | Minnesota | 71 | Indiana | 55 | BG10 Quarterfinal | |
| Fri, Mar 11, 2005 | Iowa | 71 | Michigan State | 69 | BG10 Quarterfinal | |
| Fri, Mar 11, 2005 | Illinois | 68 | Northwestern | 51 | BG10 Quarterfinal | |
| Fri, Mar 11, 2005 | Wisconsin | 60 | Ohio State | 49 | BG10 Quarterfinal | |
| Sat, Mar 12, 2005 | Wisconsin | 59 | Iowa | 56 | BG10 Semifinal | |
| Sat, Mar 12, 2005 | Illinois | 64 | Minnesota | 56 | BG10 Semifinal | |
| Sun, Mar 13, 2005 | Illinois | 54 | Wisconsin | 43 | BG10 Final |