Extent
Scope
noun
Let's take a look at this example and surround it. This example shows the extent or scope of what we're doing, and the line that surrounds it shows how far that scope goes.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼は守備範囲の広いセンターで、大活躍すると踏んでいたんだが、とんだお門違いだったよ。
I thought he was a wide-ranging center fielder and would play really well, but I was completely wrong.