A day after snapping a 13-game home losing streak to the Phillies, San Diego posted its first two-game winning streak of the season.
Hundley hit a sacrifice fly in the first inning, an RBI triple in the third and two-run homer in the fifth off Joe Blanton (1-3). Hundley began the season in an 0-for-21 slump before emerging more recently.
Bass pitched three-hit ball for six innings and allowed an unearned run. He walked five and struck out seven in his sixth career start.
Three Padres pitchers combined to hold Philadelphia, which has scored two or fewer runs in 10 of 16 games, scoreless over the final four innings.
The split gave San Diego its first non-losing series of the season. The Padres have not won a series against Philadelphia since taking a three-game set in July 2006.
Each team made three errors, accounting four unearned runs in the game. Philadelphia began the day with the fewest errors (six) and best fielding percentage (.990) in the National League.
Blanton yielded six runs - three earned - on seven hits over six innings. He struck out two and walked two.
Chase Headley doubled home two runs in the first and has hit safely in nine straight games, and 13 of his last 14. Over that stretch of 14 games, Headley is hitting .362 (17 for 47) with four homers, 12 RBIs and 13 runs scored.
NOTES: Will Venable has hit safely in all 11 starts this season for the Padres. ... Clayton Richard (1-1, 5.89 ERA) will pitch for the Padres when they open a three-game series on Tuesday against Gio Gonzalez (1-0, 2.04) and Washington. ... Kyle Kendrick (0-0, 1.93) will start Monday in Arizona for the Phillies in the first of a three-game set.