It's a good result but unfortunately 1.44.89 isn't what it used to be in the mens 800m - not globally and not even the US (where once if you were a sub 1.45 guy you were probably making teams or right on the cusp of).
Sahlman has always been one of the interesting and difficult runners to figure out. As has been pointed out, great range, great speed, still pretty tough over XC and with excellent PR's. And yet his college career at NCAA level over 1500m netted a 4th place and two exits in the semi-finals.
I read a comment that his lack of acumen at NCAA level might point to him thriving at a pro/trials level? Uhh, I would completely disagree with that. Look at the top 8/1500 guys in the nation right now.
Obviously Hoey and Kessler we have to omit as they didn't go to college, but Brazier - 800m champ in a championships record. Shane Cohen - NCAA champ. Brandon Miller 3rd at NCAA's. The Isaiah's - Jewitt and Harris, both NCAA champs. The 1500m - Hocker, Nuguse, throw in Kerr for good measure. Matt Centrowitz, need I say more?
On the flip side who is one athlete that had multiple trips to an NCAA's and couldn't really compete/perform to their talent level that went on to have a good pro career? Diamond league races might be fast but they are still tough, pro races. Sahlmann can't even hold his own physically in collegiate races - I don't see that translating to the pros. Plus we are talking Diamond League for this guy? Needs a bigger step up than just a 1.44.8 800m.