Yup, it's Rupp.
Here's how the US press saw it.
Sure: Jess Ennis is Britain's Golden Girl and let's not take anything away from her astonishing achievement, but for me it was Mo in the 10,000metres that I was waiting for.
I've been a fan of Mo Farah for years, frustratingly watching him get bullied and shoved and blocked and repeatedly edged out in the last lap by the tactics of the Ethiopian team. He's the best 10,000metres runner in the world but as his home Olympic race got under way last night the Ethiopians once again outnumbered and surrounded him and it looked like being another case of tactics beating talent.
But this time it was different. A figure in red was there like a protecting angel, countering every Ethiopian surge and bunch and riding shotgun for Mo.
A little while back, Mo disappeared from these shores and headed into the beautiful woods of Oregon. There he met local boy Galen Rupp and they hit it off as friends and training partners.
Last night I watched (and shouted and pinballed off the walls) as the Anglo-American pair took on the three Ethiopians and beat every spoiling effort with sheer guts and talent.
The last lap meant I can hardly speak this morning.
So - and this is a shock to me as well as to my lovely Colonial friends - my moment of the games was watching the face of an all-American boy just after Mo crossed the finishing line. Close behind him, in second place, Oregon's own Galen Rupp crossed the line and shouted "MO!" He didn't shout "Yoo Ess Ay", he looked across at this friend and celebrated their achievement. The pair collapsed together, Mo flat on his back and Galen leaning over him, signing "one - two" with his fingers; his knees and shins spattered with blood from the spikes he'd taken for his efforts.
Yes, I know you're supposed to run, swim, throw, pedal, sail, paddle or whatever for your country, but Nationalism be damned. This was friendship, comradeship, international cooperation and it beats Nationalism hands down.
Three cheers for Mo Farah and Galen Rupp for showing us what the Olympic Spirit really should be.
Oh, and hoorah, too, for Joanna Rowsell, for leaving her wig at home and proudly taking gold as the poster girl for alopœcia sufferers worldwide. Brave and beautiful.