Who is still in the race for what:
The League Championship:
There are three teams with 14 wins and two of them play each other which means that at least one team mathematically has to finish at least 15-5. Thus, the other 11 teams in the conference are all mathematically eliminated because they each have at least six losses. The league championship is between Michigan State (14-3), Purdue (14-3), and Michigan (14-4).
As a practical matter, Michigan State and Purdue are co-favorites because they are a game ahead in the loss column and have easier remaining schedules. Michigan has the opportunity to give the Spartans a fourth loss but other than that all they can do is win out and hope that Purdue stumbles (vtOSU, @MN, @NU).
A top-4 seed and double-bye in the B1G Tournament at the United Center in Chicago, Illinois:
The three aforementioned teams still in the league championship race have clinched top-4 seeds and double-byes. Mathematically there remains a possibility that one or two (but not all three) of them could end up tied with each other and/or Maryland and/or Wisconsin for 2nd/3rd/4th/5th but it wouldn't matter because the Badgers would lose any of those ties.
The fourth and final top-4 seed and double bye is mathematically between the Terps (12-6), the Badgers (11-6), and the Hawkeyes (10-7). Wisconsin loses all ties so they can only get it by finishing ahead of the Terps and Hawkeyes. Maryland would also win a tie with Iowa so the Terps will get the #4 seed so long as they finish at least tied for 4th place. Iowa would win a tie with Wisconsin or lose a tie with Maryland.
A top-10 seed and single-bye in the B1G Tournament at the United Center in Chicago, Illinois:
Ohio State has clinched a top-10 seed and single-bye. Mathematically the Buckeyes could finish as bad as 8-12 and behind MN, RU, and IL (along with the top-6) and tied with IU and PSU for 10th/11th/12th but the Buckeyes would win that tie and get the #10 seed even in that worst-case-scenario.
The three remaining top-10 seeds and single-byes are mathematically between the Gophers (8-10), Scarlet Knights (6-11), Illini (6-11), Hoosiers (5-12), Nittany Lions (5-12), Cornhuskers (5-13), and Wildcats (3-14).
Northwestern actually might be mathematically eliminated. The best they could do is 6-14 and tied with Rutgers, Illinois, Indiana, and Penn State for 9th/10th/11th/12th/13th. I'm not sure who would win that tie and I'm not going to bother figuring it out because the Wildcats will most likely eliminate themselves with a loss in Champaign on Sunday.