The most common and most likely answer to this crossword clue is the 8 letter word GOALPOST
I've seen this crossword clue in Independent
G
O
A
L
P
O
S
T
More clues leading to the result GOALPOST
- Poor apologist one having withdrawn support
- Upright holy man behind sentimentality about upset pal
- Bar supporter from football ground
- End letters, upright
- Upright young lady getting letters about love
- One propping up the bar with old pals got tipsy
- One holding up bar in part of India left job
- One stops scoring and is upright in game
- Bar — end — stop by hook or crook
- Mark’s position is one that is at the end of the football field
Buddy explains!

The straight part
We know that "Upright" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case upright = goalpost.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GOALPOST mean?
GOALPOST noun- One of the two vertical side poles of a goal.
- The tall Y-shaped upright, now usually of fiberglass, at either end of the playing field, through which a football must go in order for a field goal to be scored. (They were originally H-shaped, with one wooden post on either side.)