I dislike when commentators talk during points. It is disrespectful all for the audience to do it, and most commentators try to refrain from it, but some talk and talk as if the match isn't even going on.
I don't know what OP means about stats. I find the stats they present in tennis to be sorely lacking. Stats are a part of professional sports but they do not even keep track of relevant/attractive stats such as match/tournament averages.