The 28-year-old revelled in some rare time in the family limelight as he and his Australian mixed doubles partner Casey Dellacqua moved into the quarter-finals at Wimbledon with an enjoyable Centre Court win against No.6 seeds Horia Tecau of Romania and Sania Mirza of India. It was a bit like 2007 all over again, when he and Jelena Jankovic lifted this title as brother Andy - unable to participate due to a wrist injury - cheered on from the players' box.
With Andy licking his wounds following that quarter-final defeat by Grigor Dimitrov, the role reversal continues in today's last eight meeting with his former doubles partner Max Mirnyi and his Taiwanese partner Hao-Ching Chan.
"I guess it is that way," Jamie said last night after the 7-5, 6-3 win. "At least someone is still playing and the family can get out and support. It's good for me, I guess! I am sure Andy is disappointed with the way things went this year but he has had a pretty good run of it and a pretty good career so far. He will be back next year to try to do better.
"I would bet against him coming out to watch but maybe if we keep winning and are here at the weekend."
Meanwhile, Maia Lumsden's storming run in the girls' singles event came to an end when she went down 6-2, 6-1 to US qualifier Michaela Gordon.