The 23-year-old Asche will start at third base on opening day, barring injury or a disastrous spring performance. His challenger is Maikel Franco, the organization's top prospect. The Phillies would rather Franco gain more experience in the minor leagues.
Yang, a 31-year-old import from Taiwan, pitched in the Japanese minor leagues last season. He hit two Phillies and walked another in the fifth inning.
Franco replaced Asche at third.
Pop for Papelbon
Jonathan Papelbon recorded three outs on eight pitches in his Grapefruit League debut, enough action to stir encouragement through the Phillies' ranks for one specific reason.
"I could tell he was throwing with more velocity," catcher Carlos Ruiz said.
"It looked like it had some giddy-up on it," pitching coach Bob McClure said. "That was good to see."
One radar gun clocked Papelbon's fastball Sunday at 92-93 m.p.h. That was an improvement from the end of 2013 and a fine speed for the first week of March. The opposition hit .303 against Papelbon in the second half of last season while his average fastball velocity dipped to 91 m.p.h.
Papelbon attributed some of that to a hip injury that nagged him all of last season.
Sandberg said he would have challenged a first-inning play at second base that cost the Phillies a run had instant replay been available Sunday. Shortstop Freddy Galvis snared a grounder and tried to force Pedro Alvarez at second base. Second-base umpire Mark Wegner ruled Alvarez safe although Galvis' foot beat him. Wegner told Sandberg he missed the call. The Phillies will be allowed to test the replay system in five games this spring. . . . Non-roster pitcher Sean O'Sullivan will start Wednesday's game against Atlanta as the Phillies continue to audition possible starting options.