After a debut 2020-21 season at Liverpool that was afflicted by injuries and COVID-19, Tsimikas has gained more regular opportunities in the team this term.
The Reds face their third match in the space of a week when Southampton visit Anfield on Saturday in the Premier League.
The Brazilian goalkeeper wore the armband for Wednesday night’s Champions League victory over FC Porto at Anfield.
Matchday five sees Liverpool host Porto at Anfield, with the top spot in Group B already secured thanks to four victories in the opening four matches.
The midfielder was restricted to just 30 appearances in all competitions during his first season with the Reds after signing from Bayern Munich.
Gameweek 12 of the Premier League 2021-22 season featured plenty of goals, entertainment and even resulted in a notable managerial sacking.
The Liverpool right-back played an important part, as the Reds ran away 4-0 winners against Arsenal in the Premier League.
Liverpool were full value for their thumping 4-0 victory against Arsenal in the Premier League on Saturday.
Former midfielder Michael Carrick has been placed in temporary charge, with the Red Devils looking to make an interim appointment until the end of the season.