1. Lucifron beat Sonder 2-0 using almost the exact same opening in both games. He opened with 2 Reapers into 3 CC and Hellions. The builds only start to diverge around 7:00 (ref)
2. Harstem went 4-4 (50%) in PvZ. He cannon rushed in 3 of his 4 wins, and in none of his losses (ref)
3. TheStC only played TvT in 1 series, going mech in both games against Morrow in by far his longest games (24 and 31 minutes) (ref)
4. Hyun went 7-1 (82.5%) in ZvT (ignore the issues parsing gameheart games). The games lasted between 9 and 19 minutes, with his 1 loss coming against TheStC in the longest game. His 3 fastest wins, unsurprisingly, came off of Roach-Zergling all-ins (ref)
5. StarNaN went 0-6 in PvZ. Granted, it was against Hyun, Life, and Pig, but YugiOh isn't going to be much easier (ref)
6. Stephano went 6-2 (75%) in ZvZ, losing only to Hyun. He doesn't build very many Roaches but does build a lot of Zerglings (ref)
7. Tefel went 8-1 (89%) in ZvP, losing only to Harstem's cannon rush. He went Roach/Hydra in ALL of these games (ref)
8. NightEnD went 3-1 (75%) in PvZ, using a Gateway Expand build in all of them (ref)
Quick plug: you might have noticed that all of the references are from Spawning Tool, a site I'm working on that tags and parses builds out of replays so we can do better meta-analysis. Please play around with it and see what you find out. Note that it's still in beta, so sorry if you run into any bugs. Let me know if you have any feedback, and I'll see what I can do!