"We're looking at four weeks at the earliest before he can return if everything goes extremely well," Padres trainer Todd Hutcheson said. "After that, Chan Ho will need time to work back into shape."
The 33-year-old pitcher was suffering from a condition called Meckel's diverticulum, which affects about 2 percent of the population. Dr. Sunil Bhoyrul, the head of general surgery for Scripps Clinic, performed the laparoscopic surgery to resect a portion of Park's small intestine and remove a pocket and surrounding tissue where the bleeding was occurring.
Park first experienced internal bleeding July 28 while the Padres were in Denver and lost half of his blood supply. Park's treatment included three transfusions. He returned to the rotation on Aug. 11 and made two starts, allowing six runs on 13 hits in 10 2/3 innings. Park began having bleeding problems again Monday morning, nine hours before he was scheduled to pitch the first game of the Padres-Dodgers series. Park had been hospitalized since undergoing a battery of tests.
"If Chan Ho continued bleeding at the rate he was, it was a real concern," Hutcheson said.
REPLAY: The Padres completed their second consecutive three-game sweep of the Dodgers, beating Los Angeles 7-2 Wednesday at Petco Park behind four hits and three RBI from reserve shortstop Geoff Blum and the five-hit pitching of Woody Williams.
Williams allowed the Dodgers only two runs over seven innings.
The win was the Padres' 11th in their last 12 games against the Dodgers and marked the first time in franchise history that the Padres have swept three three-game series from the Dodgers in the same season. The victory also enabled the Padres to move back within a game of the NL West-leading Dodgers.