Pedro Alvarez's two-run double and Lyle Overbay's two-run single highlighted a six-run fifth inning today as the Pirates beat the Boston Red Sox, 9-4.

The Grapefruit League game attracted the largest crowd ever at McKechnie Field -- 6,602.

And the Pirates experienced their first sellout of the spring while improving to 3-7 at home.

Alvarez and Overbay had two hits each for the Pirates. Overbay is hitting .379 this spring.

Gorkys Hernandez and Andrew Lambo had RBI singles in the eighth for the Pirates.

Ronny Cedeno also homered in the Pirates' big sixth inning and Neil Walker added an RBI single.