The Milwaukee Brewers will have a new yet familiar face in their bullpen for their series finale against the Pittsburgh Pirates at PNC Park.

Veteran right-hander Francisco Rodriguez will be selected from Class AAA Nashville on Thursday, culminating a month-long tryout of sorts that saw "K-Rod" pitch in a series of minor-league games at two different levels.

Manager Ron Roenicke confirmed before Wednesday's game that Rodriguez was en route to the ballpark, but he didn't arrive in time for the first pitch.

The Brewers cleared a spot on the 40-man roster for Rodriguez by moving Taylor Green from the 15-day to the 60-day disabled list and a spot on the 25-man roster by optioning catcher-first baseman Blake Lalli to Nashville.

Roenicke indicated the team is going to keep an extra arm in the bullpen because of the heavy workload it has faced on the road trip, meaning the Brewers will go back to a four-man bench for the time being.

As for what role Rodriguez is going to fill with the Brewers, Roenicke said that will work itself out.

"I think we just kind of look at where we are with the matchups, who's been used, like we've been doing," Roenicke said. "Hopefully some guys will start putting themselves in positions where we can put them in an inning and just feel good about."

Rodriguez, who will receive a contract in excess of $2 million, made 78 appearances for the Brewers last season, alternating between pitching the eighth and ninth innings. He finished with a 2-7 record, a career-worst 4.38 earned-run average, a 1.333 WHIP and 72 strikeouts in 72 innings.

He made consecutive appearances for Class AAA Nashville on Monday and Tuesday, and struck out the side while issuing a walk in that final outing.

"I don't know if he's quite back to where he was last year, but he's 90, 91," Roenicke said of Rodriguez's velocity. "Changeup's been very good. We'll see."

Roenicke also acknowledged there's a comfort level with Rodriguez from all the seasons they've spent together, including the previous two with the Brewers.

"I've been obviously around him a long time," said Roenicke, who also coached Rodriguez with the Angels. "I think we understand what he does and how good he has pitched for us. It's hard to say what inning he's going to be. Everybody's performance is going to put them in different spots.

"I hope we have a bunch of guys throwing well enough that want to pitch the eighth inning. (Jim) Henderson's been doing a good job in the ninth.

"So we'll see."