The A’s roster shuffling continued Tuesday as they announced six player moves, including bringing up pitchers Edgar Gonzalez and Chris Schroder and releasing one-time prospect Javier Herrera.

Pitcher Sean Gallagher (1-2, 8.16 ERA), who gave up nine runs in two-plus innings in Monday’s 13-4 loss to Tampa Bay, was optioned to Triple-A Sacramento, as was left-hander Gio Gonzalez. In addition, the A’s transferred Eric Chavez to the 60-day disabled list.

Herrera was in the A’s minor league system for the past eight years and never fulfilled his promise. He was on the disabled list at Double-A Midland. The Herrera and Chavez moves enabled the A’s to make room on their 40-man roster for Edgar Gonzalez and Schroder.

Edgar Gonzalez was 3-2 with a 5.22 ERA in seven starts for Triple-A Sacramento. The ex-Diamondbacks pitcher was signed to a minor league contract by the A’s in February.

The 30-year-old Schroder, a one-time Washington National, was 2-1 with a 2.37 ERA in 14 games for Sacramento.

Gallagher was tagged for nine runs, seven earned, in last night’s 13-4 loss at Tampa Bay, as the 23-year-old righthander yielded five walks, three hits and a wild pitch before being lifted from the game in the third inning. It was his first start of the season with Oakland, but now leaves for Sacramento with a 1-2 record and 8.16 ERA in six games and 14.1 innings of work.