Meanings of regress back in inglês

I can't wait for my shot to regress back to the mean, Hayes told the Milwaukee Journal-Sentinel.

Their product, tenuous in its status as a "big five" league as a result of the reformatted Champions League, could regress back to the mean.

The fielding, so eye-catchingly good in South Africa in 2007, has regressed back to the mediocrity of old.

She seemed to have regressed back into adolescence or childhood since the day before when her mother died.

No, not changing in a way that means the language is abandoning the alphabet and regressing back to ideograms-simpleglyphs, symbols, and pictures.