Araujo is 2-1 with a 3.38 ERA in 40 appearances this season. He has allowed 29 hits, 17 runs, 13 earned runs, 19 walks and has struck out 34 in 34 2/3 innings.
Phillies interim manager Pete Mackanin expects more bullpen reinforcements when rosters can expand on Tuesday.
"We need to get through the next four days," Mackanin said. "Don't want to hurt anybody's arm."
Phillies relievers entered Friday night's series opener against the Padres at Citizens Bank Park with 425 2/3 innings pitched this season. That is the third-highest workload in baseball. Only the D-backs (443 innings) and Rockies (427 innings) bullpens have thrown more.
"Very worn out," Mackanin said about his bullpen. "We've had to use so many guys so often that we even tried to win that game last night by sending [closer Ken] Giles back out there for two innings. Fortunately he only threw 30 pitches in the two innings. He may be available tonight. It's good to have somebody else come up and keep those guys out of games."
Todd Zolecki is a reporter for MLB.com. Read his Phillies blog The Zo Zone, follow him on Twitter and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.