"I guess you could say he pitched well enough to win, but he also pitched well enough to lose," Phillies manager Pete Mackanin said.
Hellickson fell to 5-4 with a 4.50 ERA. He has a 6.43 ERA in his last eight starts.
The Phillies took a 2-0 lead in the top of the third, but the Cardinals needed just 11 pitches in the bottom of the inning to tie the game. Matt Carpenter singled on a ball originally ruled an error on right fielder Aaron Altherr.