Complex sentence: On March 15 2011, he passed his previous career high, scoring 27 points in a loss to the Chicago Bulls, and then passed it again on March 30 2011 by scoring 39 points in a loss to the Miami Heat.
Split into simpler sentences: On March 15 2011, he passed his previous career high, scoring 27 points in a loss to the Chicago Bulls. He passed it again on March 30,2011, by scoring 39 points in a loss to the Miami Heat.