Oliver Turvey was behind the wheel of the Carlin #25 when practice got underway at Monaco on Thursday morning, replacing the team's regular driver Mikhail Aleshin.
Turvey had filled in for Aleshin at the pre-season GP2 tests in Barcelona because of problems with the Russian's financial backing from one of his key sponsors, but looked to be out of luck when it came to race opportunities when Aleshin returned to the team's line up for the season opener in Turkey and for Barcelona last weekend.
However, press releases from Carlin were always carefully worded not to suggest that Aleshin's return was entirely permanent, presumably being subject to any recurring problems with the sponsors, giving Turvey a little cause for optimism which has now been delivered on for the prestigious Monaco event.
It's not known whether Turvey's appearance for the team is just a one-off: he may have been brought in for his proven track record at this most tricky of circuits, having won the Formula Renault 3.5 race in the principality for Carlin in 2009.
Turvey raced in GP2 last year with iSport and in GP2 Asia with Ocean Racing Technology, but failed to get sufficient sponsorship to secure a full-time GP2 drive in 2011.
Turvey's seat for Monaco means that the Carlin team have an all-British line-up, with Turvey working alongside regular driver Max Chilton.
Aleshin had also previously announced that he would be participating in this year's German Formula 3 series with Russian team Stromos Artline's Arttech F24 Mercedes, but there is no clash of dates with this weekend's Monaco GP2 event: the next German F3 race is at Assen on 4/5 June.
In other driver news, Alvaro Parente continues to sit in for Christian Vietrois at Racing Engineering, after the German driver also missed Barcelona suffering from "bad headaches" following a high speed crash in Turkey. Vietoris had previously said that "I need to have five or six days rest and hopefully I will be okay to come back for Monaco."
Kevin Ceccon gets a second weekend's outing in the Colini #19, replacing regular driver Davide Rigon who suffered serious leg injuries at the opening GP2 round of the year at Istanbul Park. Rigon is expected to be out of action for some time following surgery.