His rules for tournament competition are still used today with only slight variation.
On the right, old corrals were the only variation in the meadow.
Because of the only slight variations in grade, flooding is common.
The only major variation in training was during the first ten days before a new season, when players were not allowed to kick a ball.
The only variation, ever, was whether they started in at the top or the bottom.
I suppose they should consider themselves lucky if color is the only variation.
Temperatures are very warm to hot throughout the year with only minor variation.
The only other variation was, in 1985 they had a 12-volt electronic system.
The other people around the table were all wearing the same kind of suit, with only minor variations in detail.
The only variation tends to be in the type and degree of stupidity involved.