This is a chord set of Much  Too Young (GB).  It is different than the
one currently on your site in that the chorus of the current version is
missing an important progression cord, and some of the chords throughout
the song are not placed with the correct words.
Compare for yourself, you'll see what I mean.
Much Too Young (To Feel This Damn Old)
Randy Taylor & Garth Brooks

Intro G Am7 D C G D G Am D C G D

G                            Am
This old highway's getting longer
D                C              G      D
Seems there ain't no end in sight
G
To sleep would be best
           Am
But I just can't afford to rest
D                  C                 G      D
I gotta ride in Denver tomorrow night
G                               Am
I called the house, but no one answered
D                     C                 G        D
For the last two weeks no one's been home
                G
I guess she's through with me
             Am
To tell the truth, I just can't see
        D                C                G
What's kept the woman holding on this long

(CHORUS)
             C
And the white line's getting longer
         G         D\F#   Em
And the saddle's getting cold
        C                     D             G
Now I'm much too young to feel this damn old
         C                               G      D\F#      Em
All my cards are on the table with no ace left in the hole
        C                     D             G
Now I'm much too young to feel this damn old

    G                    Am
The competition's getting younger
         D           C                 G     D
Tougher broncs, you know I can't recall
            G
A worn out tape of Chris LeDoux
       Am
Lonely women and bad booze
         D                     C            G
Seem to be the only friends I've left at all.

(CHORUS)