100 & 200: Literally everyone but Justin Gatlin. Can rooting for Gatlin to pull a hammy count?
Isaiah Harris in the 800. Kids got nothing to lose, and probably has a slight chip on his shoulder seeing as the freshman ran a 1:45 and got 4th in one of the fastest NCAA 800m finals ever, but has gotten about as much attention as some 1:48 kid that didn't make it out of the regional meet.
Kate Hall in the LJ. She had a rough year at Iowa State and decided to redshirt her freshman outdoor season and is transferring to Georgia to compete for the rest of her college career. Despite that, let's not forget that just last year as a senior in high school she broke a 39 year old national record in the LJ, and she's #10 All-Time on the worldwide U20 list. She's spent the spring and summer training with the same person who originally got her over 22', and her 6.83m jump from last year would rank her 2nd in the US, tied for 7th in the world this year, and is only 2.4 inches short of the mark that got a bronze medal at the 2012 games in London.
Ben True in the 5k/10k: My old HS coach was his youth/MS coach.
Riley Masters in the 1500/5k: Watched him run in high school. He was a great, respectful competitor and while he was talented I don't know if most people really reasonably expected him to explode onto the scene the way he did going from a 4:16 1600/16:11 5k xc guy to running sub 4 in the mile at UMaine (a school not exactly known for it's track prowess) before making the 1500m trials in 2012 and now having PRs of 3:36/13:17.
My regional bias my be showing here.