Chandler Parson made his debut as a Dallas Maverick last night in the teams preseason opener, but it would be spoiled by his former team as Dallas fell to Houston 111-108.  James Harden scored 17 points for Houston, but Kostas Papanikolaou made three big free throws with 0.2 seconds left to seal the win in a foul-filled preseason opener for both teams Tuesday night.  Parson did play well in the loss as he added 14 points for Dallas who was playing without star forward Dirk Nowitzki.  He sat out of Tuesday's game as he is nursing a right hip contusion that isn't expected to sideline him long.  Offensively though, Dallas really had the ball moving last night as everyone that entered the game was able to score at least two points.