In 2002, Chacón battled inconsistency and injuries throughout the season. He pitched in 13 starts in the first half, going 3-6 while having a stint on the DL. Once he returned, his season took a turn for the worse. In the second half he amassed an ERA of 7.00 in eight starts and was demoted to AAA. Chacón never was recalled back to the majors and finished the season with a record of 5-11 while walking 60 batters in 119 innings.