Liriano (6-3) allowed seven hits and three walks while striking out six. He lowered his ERA to 2.30 over nine appearances for the Pirates, turning in his fourth quality start in five outings.
Angels starter Jerome Williams (5-3) was tagged for five runs (four earned) on eight hits over six full frames.
Mike Trout provided the only RBI for Los Angeles.
Kate Middleton recycles dress at movie premiere
Couple mistakenly served bag of cash at McDonald's drive-thru