HISTORY: When did these things come about?

[TomM]

HISTORY: When did these things come about?

What season were ties in indivdual matches eliminated (in a dual meet)?
What season did the 13 weight class system begin?
What season did the 14 weight class system begin?
What season was the choice of 'neutral' and 'defer' added?
What season was the first the '7%/Half Pound per day' fully implemented?
What season was the rule to 'place your foot on the green/red line on the ten foot circle eliminated?
What season was the '10 foot middle circle' eliminated?

Other changes?

[bigG]

When was the first season that the offensive wrestler was responsible for the safe return of his opponent to the mat, as opposed to the old school "slam" call?

[leg turk]

When did the divisions go from 1, 2, 3, to A, B, C, to 1, 2, 3?

[MahonDog37]

The 13 Weights started in the 1988-89 season.  All the weights changed and they added one.  The weights were

103
112
119
125
130
135
140
145
152
160
171
189
275

215 weight class came later.  Late 90's maybe? 

[Redleader52]

The 13 Weights started in the 1988-89 season.  All the weights changed and they added one.  The weights were

103
112
119
125
130
135
140
145
152
160
171
189
275

215 weight class came later.  Late 90's maybe? 

If I recall correctly, 215 was added in for the 2002-03 season.

[bigoil]

HISTORY: When did these things come about?

What season were ties in indivdual matches eliminated (in a dual meet)?
What season did the 13 weight class system begin?
What season did the 14 weight class system begin?
What season was the choice of 'neutral' and 'defer' added?
What season was the first the '7%/Half Pound per day' fully implemented?
What season was the rule to 'place your foot on the green/red line on the ten foot circle eliminated?
What season was the '10 foot middle circle' eliminated?

Other changes?

14 wt classes - 2003

Other - Over time changing from a 3 - 1 minute period? I think that would be the same answer to when did the referee decision end but may be different.

[Jimmy]

When was tech fall added and superior decision dropped?

[bigoil]

When did the divisions go from 1, 2, 3, to A, B, C, to 1, 2, 3?

Class changed to division in 1991.

[Barou]

When did the divisions go from 1, 2, 3, to A, B, C, to 1, 2, 3?

Class changed to division in 1991.

I was thinking 1990