Jakubauskas, whose contract was purchased by the O's prior to Saturday's doubleheader, joked that if he made it to 13 this time, he'd take a moment to smile on the hill.
A 32-year-old right-hander who suffered the injury in his Pirates debut -- he took a liner by Lance Berkman off the side of his head -- Jakubauskas joins the Orioles in place of struggling righty Brad Bergesen.
Jakubauskas did not receive a big league invite in Spring Training. He was asked on Saturday if it was rewarding to be back in the big leagues given his injury -- which occurred April 24, 2010 -- and said it's rewarding, period, to be in the Major Leagues.
"You don't strive to play in the Minor Leagues," said Jakubauskas, who pitched 6 1/3 scoreless innings this spring. "You go down there and, hopefully, you do well, and you get the call to be back up here. Your goal is to play in the Major Leagues. That's the main goal."
Now, Jakubauskas is focused on staying. He said Saturday he wasn't sure of the team's exact plans for him, but he would do whatever was asked. He entered the second game of the doubleheader in the seventh inning and closed it out, allowing five runs on six hits in three innings. The club announced after the second game that Guthrie would start on Sunday.
"One, we think he's the best option right now of what we have," manager Buck Showalter said of Jakubauskas joining the roster. "He has options, which allows us to kind of move him back and forth if we have to. That's something's that's been a challenge for us, the way we're constructed."
In 35 games with the Seattle Mariners in 2009, Jakubauskas went 6-7 with a 5.32 ERA. He is reunited with O's bullpen coach Rick Adair, who was the Mariners' pitching coach at the time.
"[He can] locate his fastball, has a feel for pitching," Showalter said. "[He's] athletic, holds runners, he works fast, which is always a good thing."