Jazz 103, Nuggets 87

   The replacement referees were competent. Carlos Boozer heard cheers from the crowd. Those were the two things to take away from the Jazz's preseason opener Thursday, a game that should best be forgotten by lunch Friday.    With overseas trips, the Jazz and the Nuggets played their first preseason game less than a week after opening training camp. Neither Kenyon Martin nor J.R. Smith played for Denver, so be careful about putting too much stock in the Jazz's victory.    Some observations from the game:    --Not even three minutes in, Mehmet Okur hit a running hook against top shotblocker Chris Andersen. It's the shot Okur has talked about adding in the off-season. Okur then nailed a three-pointer a minute later and had 10 points and seven rebounds in 19 minutes.    --C.J. Miles got off to a fast start and drew a three-shot foul just before halftime on the way to scoring 16 points. Miles hit one ...