Moscow Friday Notebook

***ISR is down to one Audi R8 LMS ultra this weekend, and probably for the remainder of the season. The car owned by the Fjordbach family doesn’t look likely to return any time soon, as the brothers were dissatisfied with the results up until now.

***Additionally, Fabio Onidi looks to be out for the rest of the season. The Italian sustained a back injury in an accident at Monza that turned out to be more serious then previously thought. The former GP2 racer fractured three of his vertebrae, forcing the second Audi out of the two remaining Endurance Series races at Spa and Nürburgring.

***The black-liveried No. 23 Nissan GT Academy Team RJN Nissan GT-R NISMO GT3, driven this weekend by Mark Shulzhitskiy and Nic Hammann, is the same chassis the British team has used in Blancpain Endurance Series competition, as well as May’s Nürburgring 24.

***Nick Catsburg told Sportscar365 that he’s planning to complete the remainder of the World Touring Car Championship with Lada. The Dutchman made his WTCC debut at Moscow Raceway last month, finishing fourth in Race 1.

***While originally scheduled to take part in the entire Sprint Series season, Marco Seefried is expected to now miss the season-ending Zandvoort round due to his commitments in the FIA World Endurance Championship with Dempsey Proton Racing. Zandvoort was announced last month as a replacement to the Baku round, which was scheduled for the end of October.

***ISR has already placed an order for the new Audi R8 LMS and is close to buying a second one. The team has been in GT racing for over a year now and is satisfied with its GT operation, but at the same time the Czech squad keeping the possibility open to return to the Renault World Series, where it competed until last year.

***Attempto Racing will only enter two cars in the Total 24 Hours of Spa at the end of the month. The German team will leave its two McLaren 650S GT3s at home and will replace one of them with an additional Porsche, as it feels the 911 GT3-R is better suited for the endurance race than the 650S.

***The McLaren MP4-12C GT3 that Attempto ran for a trio of Argentinian drivers at the Paul Ricard 1000km won’t make a return either.

***MRS GT Racing is competing at three different tracks and series this weekend. Besides Moscow the team is also running two Nissan GT-Rs in the ADAC GT Masters round at the Lauzitsring, while further fielding two cars in the Porsche Supercup at Silverstone.

***Eurosport 2 will carry live coverage of Saturday’s Main Race, beginning at 4 p.m. CET, with Mark Cole and Stuart Hall as commentators. North American viewers can watch same-day coverage of the event on CBS Sports Network, on Saturday at 12 p.m. ET, with a re-air Sunday at 5 p.m. ET.

John Dagys contributed to this article