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There have now been nine B1GCG's.  Wisconsin leads in appearances with six while Ohio State leads in wins with four.  Those two teams are also the only two teams to have played each other more than once in the B1GCG.  
Appearances:

Wins:

Match-ups:


The existence of the B1GCG should change the way we view league titles.  Prior to the B1GCG there were 114 seasons of football played by this league but there were 167 Champions.  That works out to an average of 1.46 per year because when two teams tied they were just both declared co-champions.  

Total B1G Championships:

• 42 Michigan
• 38 Ohio State
• 18 Minnesota
• 15 Illinois
• 14 Wisconsin
• 11 Iowa
• 9 Michigan State
• 8 Northwestern
• 8 Purdue
• 7 Chicago
• 4 Penn State
• 2 Indiana

Michigan has held the lead in B1G Championships since they moved into a tie with Minnesota at 16 each following Michigan's 1943 title (shared with Purdue) and they have held the lead alone since they broke the tie with Minnesota by winning an outright title in 1947.  

History of the lead in B1G Championships:

• Wisconsin won the first two league titles and held the lead alone through 1901.  
• In 1902 Michigan joined Wisconsin at three each.  
• Michigan held the lead alone from 1903 through 1909.  
• In 1910 Minnesota joined Michigan at six each.  
• Minnesota held the lead alone from 1911 through 1921.  
• In 1922 Michigan joined Minnesota at eight each.  
• Michigan held the lead alone from 1923 through 1939.  
• In 1940 Minnesota joined Michigan at 15 each.  
• Minnesota held the lead alone from 1941 through 1942.  
• In 1943 Michigan joined Minnesota at 16 each.  They remained tied at 16 through 1946.  
• Michigan has held the lead alone since 1947.  

Michigan's lead in league titles grew to as many as 13 when the won their last, in 2004 (42-29 over tOSU).  It is now down to four (42-38 over tOSU) and has not been that small since prior to the 1971 season when they led 22-18 over Minnesota.  

Asterisks.

For comparative purposes, what happens to the number of championships if you use tiebreakers to narrow it down to just one per year for all of the pre championship game years?

First, that would be an enormous project because there were 53 more champions than years from 1896-2010.  

Second, in a lot of the early cases and at least some modern ones it would be REALLY difficult to break the ties because the teams didn't play each other.  

Third, at some point in the past ties switched from being treated as non-events to being treated as 1/2 of a win and 1/2 of a loss.  Ie, in recent pre-OT ties a team that finished 6-0-2 would be tied with a team that finished 7-1 but in the old days the 6-0-2 team would be the winner based on what would effectively be viewed as a 6-0 record.  I know they changed that at some point but I don't know exactly when.  

Examples:
The first co-championship was in 1900 between Iowa and Minnesota:

• Iowa went 2-0-1 in conference (beat Chicago and Michigan, tied Northwestern)
• Minnesota went 3-0-1 in conference (beat Wisconsin, Illinois, and Northwestern, tied Chicago)
• By the modern rule Minnesota wins but back then they shared

The last co-championship was in 2010 between Wisconsin and Michigan State:

• Wisconsin went 7-1 (lost to MSU, beat tOSU)
• Michigan State went 7-1 (lost to Iowa, beat MSU, didn't play tOSU)
• Prior to their wins being vacated Ohio State also went 7-1 (lost to UW, didn't play MSU)
• By the most recent tiebreaker in effect MSU would be the champion based on a 1-0 H2H or H2H2H.  

The most recent occurrence of this that I know of was tOSU and Iowa not playing each other and finishing tied in 2002:

• Iowa went 8-0 and had an OOC loss
• Ohio State went 8-0 with no OOC losses
• By the most recent tiebreaker in effect tOSU wins based on superior overall record but I always hated that tiebreaker because it effectively encouraged cupcake OOC scheduling.  

Another thing is expansion.  Forever there were 10 teams, with a two decade period of nine.  Mix in co-championships, and years where 1/3 of the league won title was probably not incredibly rare.

For comparative purposes, what happens to the number of championships if you use tiebreakers to narrow it down to just one per year for all of the pre championship game years?

For the record...

It wasn't me this time, Medina.

Another thing is expansion.  Forever there were 10 teams, with a two decade period of nine.  Mix in co-championships, and years where 1/3 of the league won title was probably not incredibly rare.

Just FYI, the largest number of co-champions was four in 1990 when Michigan, Illinois, Iowa, and Michigan State all shared the league title.  They all went 6-2:

• 3-0 H2H2H2H Iowa:  Beat M, IL, and MSU but lost to tOSU and MN, went to the Rose Bowl
• 1-2 H2H2H2H Michigan:  Beat Illinois, lost to MSU and IA, went to the Gator Bowl
• 1-2 H2H2H2H Illinois:  Beat MSU, lost to M and IA, went to the HoF Bowl
• 1-2 H2H2H2H Michigan State:  Beat M, lost to IA and IL, went to the Sun Bowl

There were also a slew of occasions when three teams shared the title.  

I'd advocate for going back to determine the tiebreaker h2h champions, while accepting the true co-champ years (a la 2002) up to the point this wasn't possible.  Or if you go back far enough to where you had the 2002 situation every year for a long run of seasons.

It could just be an era acknowledged as true champions.  In creating teams from the past for Whoa Nellie, I'm just putting co-champions...but it's bothersome.  And I can't just go by who went to the Rose Bowl, thanks to the stupid no-repeat policy.