Pierzynski backed up Monday's effort with another three-hit game in Tuesday's 10-7 loss to the Rangers, going 3-for-4, driving in a run and scoring twice.
When manager John Farrell called for a hit-and-run early in Monday's game, Pierzynski slapped a single to left.
"I was actually happy John put on the hit-and-run on the first pitch in my first at-bat, because it kind of just let me relax," said Pierzynski. "I knew I had to do something to help the team, and it worked out."
With Pierzynski joining a World Series championship team that has much of the roster from last season intact, it's understandable he would be eager -- perhaps too eager -- to show his own worth.
"It's been a rough, long week, a frustrating week," said Pierzynski. "It's a new day every day. Good thing about baseball, you always get a chance either later in the game or the next day."
Pierzynski had two hits in his first 16 at-bats with Boston before Monday's game.
However, he had received credit for doing a good job handling the pitchers, in particular John Lackey, who is off to a solid start with Pierzynski as his batterymate.
"He has a lot of experience," said Lackey. "I've faced him a ton of times, so he knows what I've got, and he likes to be aggressive, and I like to be aggressive, so we work well together, for sure."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. Quinn Roberts is a reporter for MLB.com This story was not subject to the approval of Major League Baseball or its clubs.