Brian Matusz has been talking all year about how he's not going to let himself get frustrated, that he is going to keep working to get over this season-long funk.

He delivered the same message on Monday, perhaps in a more subdued, reflective manner, after allowing six runs in 1 2/3 innings in a 18-9 loss to the Boston Red Sox.

"It's tough going out there, especially when the offense jumps out to a nice start and provides some run support," Matusz said. "It's frustrating to be able to go out there and not hold the opponent. It's tough, but I'm just going to keep building, keep working. That's all I can do."

Matusz drew the criticism of some in the organization for not being prepared physically and mentally heading into this spring and it affected his season. He was hurt – and then ineffective. After 11 starts this year, Matusz is 1-8 with a 10.68 ERA.