As others have said 46:23 is 10s off of the American record. I haven't seen splits yet so no clue if he went out with the leaders and faded a bit or if he just stayed in control. You would think he would have run 11s faster just to get the official record. 46:23 = 1:00:48 half pace. He can run faster over a half marathon so I hope he treated this like a tempo. Two guys finished in front of him in 45:23 & 45:47. Dunno if he went with that or just did his own thing but in a race like this he should be running with those front two. What's the point of flying all the way to the Netherlands to do 10 miles that you could have just done on the Nike campus? Rupp has kind of an uneven history with tune-up races before marathons. He ran RNR Philly last year in the heat and New Haven 20k. He didn't rip either of those races and the cycle before that he ran 1:02 in Denmark before Boston 2017. Despite those races, he was able to have superb races in Boston & Chicago and was able to throw down faster at the end of those marathons than in some of those races.
Rupp is the best the US has for the marathon so I want to see him run fast. Since Chicago is the A goal, I wonder why do that half marathon in 3 weeks if he might just run 1:01-ish when some folks are gonna try to be sub-59.