Sea began his progaming career in 2004 and played his first televised game when he was only 15. His first time to be noticed in the public arena was during the K-SWISS ODT where he beat GGPlay, Reach, ChoJJa, YellOw and Nal_rA just to earn his 4th seed for the ShinHan2006-1 OSL. Defeating all 4 of KTF's best players in one go. His run was eventually halted in the Ro16 by YellOw. But then shortly after he pulled off a spectacular game against BoxeR in the SKY2006 Proleague R1 finals.
Yes, bio in TvT.
Sea's subsequent run in the ShinHan2006-2 OSL started with a 3-0 over JJu, Rock and Canata, before he was stopped short by GoRush.
At this time, BoxeR said in an interview when asked the question "Over the next two years, which terran, protoss, and zerg players will be the best?"
Boxer: "...and for Terran (and this is to encourage him to make more of an effort), Yum Bo-Sung (Sea).
And Sea did exactly that, he proved himself to be the proleague monster that he continued to be even through 2011, going 9-3 and 5-2 against some of the starkest competition at the time, eventually making it to the ace-match of the SKY2007 proleague Finals where he was matched yet again against the man who knocked him out of his OSL run: GoRush
Leading MBCGame Hero to their first and sadly, only proleague Gold.
Sea's subsequent attempts at individual leagues was stopped short by notable rivals (many of which are now retired and who remain legends), in the Daum OSL he lost to Reach in the final match of the ODT in an epic game on Hitchhiker
Shut down again in the Ro8 of 2007 GOMTV MSL S2 by GoRush. He was given another chance due to OversKy leaving for Korean military service, after winning a decisive game against iloveoov, he lost to XellOs, once again stopping at the Ro8.
Sea then hit a slump in 2008 and since then failed to make any significant runs in the OSL or MSL, despite being a consistently key proleague player on MBCGame Hero (along with Light). His most recent run at an individual league was in the 2011 ABC Mart MSL where he was placed in the group of death along with Bisu, Jaedong, and Flash.
Sea has recently been in a huge slump, as we have all seen. The disbanding of MBCGame Hero lead Sea to transfer to Team 8 which has suffered from a lack of practice partners and coaching. Sea is 3-9 in the SK Planet 11-12 Proleague right now. Many fans have shown profound disappointment (including Sea himself), some even sarcastically suggested that he should retire.
Here's wishing Sea, one of the most consistently underrated and deserving players -along with the rest of Team 8 - the very best, for bringing us so many good games and memories in the past, as well as for the future of BW and korean esports.
edit: seeing as how many people have responded with comments that Sea is overrated rather than underrated. I will try to qualify my statement of Sea being underrated:
It really depends on the time you started viewing rather you had high or low expectations of Sea, a fan of recent years (2009 / 2010) post Sea's 2008 slump probably has no idea that he's beating Nal_rA and many other individual league finalists at a very young age, and thus had huge expectations on his shoulders.
Sea's maintained a 55%+ win rate in every match up up to date, which isn't something you can say about many famous finalists like nal_ra, yellow, boxer, julyzerg, reach, forgg, and any many others that he has played with; and even now is a status that only the TBLS and few S class players like fantasy can match. Yet he rarely receives even a faction of recognition to any of the old players (every time Yellow or Reach plays there is instantly hype and anticipation even though we know they are from an older generation), nor the same recognition as present day stars like the TBLS, or other S class players like Fantasy.
Though I agree that to alot of older viewers (and some younger ones), Sea may seem overrated as he has never delivered a deep Individual league run. You are free to make your own assertions about rather he's overrated or underrated. But I think we will all miss him if he retires and we want there to be MORE competitive play and confidence from him.