This can happen when you are running at the BOTTOM of your range.
Ingebrigsten's range is 1500, Mile, 2000m, 3000m, 2mile, 5000m.
Not a pure 1500m. Never was. Less likely to ever lose at 2k, 3k, 2mile.
5000m is the top of his range and he probably as beatable there as he is at 1500m.