Grandal (groin) is catching and batting eighth Friday against Atlanta, Kevin Gorman of TribLive.com reports.

Grandal missed a pair of games with soreness in his left groin but will return to the starting lineup Friday against lefty Ray Kerr. Grandal is batting .220 with two home runs in 13 games on the year.

Murphy (oblique) went 2-for-6 with a double, a home run and two RBI for Triple-A Gwinnett on Thursday.

The rehabbing catcher got the start at designated hitter and launched a solo shot off Valente Bellozo in the fourth inning, Murphy's second home run in two games for Gwinnett. Atlanta may want to make sure he's ready for regular defensive duties before activating him from the IL, but based on how he's looked at the plate, the 29-year-old should be back with the major-league team at some point this weekend.

Tromp went 2-for-4 with a run scored in Thursday's win over the Cubs.

The 29-year-old backstop has seen his playing time pick up lately due in part to a concussion scare for Travis d'Arnaud, and Tromp has responded by going 6-for-13 with three doubles and two runs scored while appearing in four of the last seven games. His time in the majors figures to be coming to a close, however -- Sean Murphy (oblique) has homered in back-to-back games to begin his rehab assignment with Triple-A Gwinnett and could come off the IL as soon as this weekend.

Bart went 2-for-4 with a double and a grand slam in Thursday's 7-6 loss to the Giants.

Bart made quite an impression on his former team, launching a 434-foot grand slam off Mason Black in the fourth inning to put the Pirates ahead 5-1. The 27-year-old Bart's been hot of late, going 9-for-23 (.391) with three extra-base hits in his last seven games on the heels of an 0-for-14 stretch. Overall, he's slashing .267/.362/.517 with four homers, 12 RBI and seven runs scored across 21 games. With Yasmani Grandal nursing a groin injury, Bart could be in line for a regular starting role in the short term.

Diaz is out of the lineup for Thursday's game against the Athletics.

Diaz will be joined on the bench by Charlie Blackmon, Kris Bryant and Brendan Rodgers as the Rockies rest four key regulars for the day game after a night game. Jacob Stallings will fill in behind the plate in place of Diaz, who went 3-for-5 with a home run, a double and two RBI in Wednesday's 4-3 win.

Amaya is out of the lineup for Thursday's game against Atlanta.

Amaya will receive a breather as Chicago and Atlanta wrap up their series with a day game after a night game. Yan Gomes will check in behind the dish to replace Amaya, who had started at catcher in five of the Cubs' previous six games.

D'Arnaud is absent from the lineup for Thursday's game against the Cubs.

He started the first two contest of the series, but with Thursday's finale being a day game, d'Arnaud will get a breather. Atlanta will go with Chadwick Tromp as its catcher for starting pitcher AJ Smith-Shawver.

Stephenson is out of the lineup for Thursday's game against the Padres.

After catching in both of the past two days, Stephenson will get a breather Thursday as the Reds and Padres wrap up their series with an afternoon game. Luke Maile will replace Stephenson as the Reds' starting catcher.

Grandal (groin) remains out of the lineup for Thursday's contest versus the Giants, Andrew Destin of the Pittsburgh Post-Gazette reports.

Grandal will miss a second straight start after exiting Tuesday's 7-6 win with left groin soreness. Joey Bart will handle the catching duties in place of Grandal, who is considered day-to-day.

Campusano is out of the lineup for Thursday's game against the Reds.

Campusano will rest for the Thursday afternoon game after he started behind the plate Tuesday and Wednesday while going 1-for-7 with a run scored. Kyle Higashioka will draw the start at catcher and will form a battery with right-hander Matt Waldron.