The Pirates recalled Nicolas from Triple-A Indianapolis on Friday, Alex Stumpf of MLB.com reports.
Williams went 1-for-4 with a stolen base Thursday against the Brewers.
Suwinski went 1-for-4 with a double, a walk, an RBI and a run scored Thursday against the Brewers.
Chapman (0-2) allowed two earned runs on two hits and no walks while striking out one to take the loss Thursday against the Brewers.
Bart went 1-for-4 with a three-run homer and two runs scored in Thursday's loss to the Brewers while also drawing a walk.
Keller allowed four runs on six hits and two walks over five frames in a no-decision against the Brewers on Thursday while striking out seven.
Bart will start at catcher and bat cleanup Thursday against the Brewers.
Davis is not in the lineup for Thursday's game versus the Brewers.
Hayes is out of the lineup for Thursday's game against the Brewers.
Reynolds went 1-for-3 with a two-run homer and a walk in Wednesday's 3-2 loss to the Brewers.
Priester is slated to make his next appearance as the starting pitcher for Friday's game against the Giants in San Francisco, Alex Stumpf of MLB.com reports.
Taylor is out of the lineup for Wednesday's game against the Brewers.
McCutchen is absent from the lineup for Wednesday's game versus the Brewers.
Priester is no longer scheduled to start Wednesday's game against the Brewers, as Pirates manager Derek Shelton confirmed that Josh Fleming will get the nod instead, Kevin Gorman of TribLive.com reports.
Pirates manager Derek Shelton said Fleming will start Wednesday's game against the Brewers, Kevin Gorman of TribLive.com reports.
McCutchen went 2-for-4 with a solo home run Tuesday against the Brewers.
Davis is not in the lineup for Tuesday's game against the Brewers, Kevin Gorman of TribLive.com reports.
Triolo isn't included in the lineup for Monday's game against the Brewers.
Priester is scheduled to start Wednesday's game against the Brewers at PNC Park.
Bednar tossed one clean inning, striking out one during Sunday's 6-1 loss to the Red Sox.
Perez (1-1) picked up the loss Sunday against the Red Sox, allowing four runs on six hits over four innings. He walked four and struck out seven.
Taylor is not in the starting lineup for Sunday's game against the Red Sox, Kevin Gorman of TribLive.com reports.
Joe is starting in right field and batting in the leadoff spot for Sunday's game against the Red Sox, Kevin Gorman of TribLive.com reports.
Davis is not in the starting lineup for Saturday's game against the Red Sox.
Bart (head) is starting at catcher and batting fifth in Saturday's game against the Red Sox.