To me, a "base hit" in baseball is a single.
Our regular radio guy uses it to describe all hits. I guess not home runs much but doubles and triples are very often described as base hits. He's almost aggressive in how often he uses the term for extra base hits.
Seems wrong to me.
He's a decent guy too. Jerry Howarth. Cheerful, professional, some humility. Seems like he could be a buddy in real life. He's not like our douchy TV guys.
But he does that.