The Bucs scored all five of their runs in the first inning, thanks in part to a three-run shot by Casey McGehee and a solo homer by Pedro Alvarez.
In the second, however, former Pirates backup catcher Erik Kratz hit a two-run bomb. Then Placido Polanco hit a grounder for an RBI in the sixth. Burnett left after 6.2 innings after striking out seven and walking two, and allowing three earned runs.
The Phillies inched closer in the eighth on a solo homer by Hunter Pence. Despite a leadoff single by Jimmy Rollins against Joel Hanrahan in the ninth, though, the Phillies couldn't bring the tying run home, and the Bucs escaped with a 5-4 win.
For more on the Pirates, check out Bucs Dugout.