Someone with more time and energy than myself can research the following, but it seems that DJ has higher assist numbers in games played at home than away. It begs the question why? if this is the case. Assists can be quite subjective, IMO, although they shouldn't be, which leads me to wonder if an official scorer might be less inclined to award an assist to a visiting player.

    

Assists are the the most subjective stat.  For an assist to be counted the scoring player must make an immediate move to the basket. If he holds it for a second or makes a fake it is NOT an assist.  A player can get a rebound and make the outlet pass. If that player makes any kind of fake on his way to the breakaway lay up it is not an assist. Home stat crews "cook" the stats all the time. I was on the official stat crew when Kareem broke the scoring record (in Vegas by the way). Magic came up to us before the game and told us if he was on the court when Kareem broke the record he wanted the assist. Kareem got the pass on the baseline. He held the ball for a second or two and faked a baseline drive on Mark Eaton. Then he scored on a skyhook from the baseline. We gave Magic the assist. 

Doing official scoring is hard work. They're saddled with antiquated software and an ever-quickening game. Usually, they're trying so hard just to keep up they don't even know what the score or time is. In college, most scorers are grad students or assistants of some time. They probably don't have time enough to think about favoring their team. Could they do it subconsciously? Sure.

JSF is right. It's tough, and it's pretty much just two people (the caller and the person keying). I was the caller (and the keyer at times) for the better part of six-plus years for the men's team, starting when I was a freshman in '97. I loved every minute of that job. It IS possible to miss something, but even when it's hectic, it's not as hard as you'd imagine to stay afloat. There are definitely judgment calls in a few situations, especially assists and rebounds. With regard to the latter, I'm STILL waiting for my check from Brandon Hunter.

The job is fun and relatively easy to do if you stay abreast of the rules and keep a calm head. It should be noted that even coaches don't know every nuance of the rulebook. A former head coach here will likely go to his great reward still believing that a player should get an assist if they pass it to another player who gets fouled on the shot yet misses.