Three observations from the Pirates' 6-3 loss to the Red Sox here tonight at LECOM Park: 

• I continue to be impressed with everything Jake Mangum brings to the table as the Pirates' fourth outfielder heading into the season. He's displayed it all this spring: The bat, the arm, the speed. And he's not often described as a "pest" for no reason. When Mangum's at the plate, he's operating with the intention of getting on base and advancing 90 feet by any means necessary. His first at-bat against Sonny Gray today was a beauty to watch. Dragged it out by fouling off tough pitches, laid off some breaking balls in the dirt and ended up driving in the game-tying run with an RBI single on the ninth pitch of the at-bat. Gray's a tough pitcher to face. Mangum did what he had to do to battle and make something happen for his team. 

• It seems like Justin Lawrence has done what's necessary this spring to solidify a significant role within the bullpen. He's pitched in high-leverage situations before, so he has the experience, but he also has the stuff and the results to show for it. Most importantly, he looks healthy and ready to go. 

• Mitch Keller admitted he wasn't as efficient as he would have liked to be on a day in which he threw 41 of 72 pitches for strikes. He also said he thinks that just goes along with throwing every pitch in the arsenal to further prepare himself for the regular season. Keller, who threw 3 2/3 innings of one-run ball, wasn't particularly as sharp as one might want him to be in his final spring start, but he came away feeling good with all of his pitches and even went to five of his six in two-strike counts to finish off hitters for strikeouts. In his words: "I feel like I can use any pitch as a weapon to strike somebody out, so that's a good feeling going into the season."