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Joe P.Eric, you have to hit the books just a little bit harder. 
Collins was in the majors in 1906, and Weaver started in 1912.
By 1920, that would give Collins 14 years, and Weaver 8 years.
Like what has been already stated, Collins was establishing his credibility and numbers all along.
He added another 10 years after 1920 and maintained the pace to the HOF.
There is no comparison between Collins and Weaver.
Someone said it best, "If it were not for the scandal, we might have not recalled who the hell was Weaver."
You can look it up.