Kim "Ssumday" Chan-ho (Hangul: 김찬호) is the top laner for 100 Thieves.
Kim "ssumday" Chan-ho was picked up by KT Rolster B on February 27th, 2013 to be their starting top laner. His first tournament was OLYMPUS Champions Spring 2013 where KT B lost in the quarterfinals 3-1 to MVP Ozone. After the tournament, KT B changed their name to the KT Bullets and ssumday was benched in favor of InSec, who was moved top to make room for KaKAO to rejoin the team. He remained on the Bullets as a sub until he was moved to the KT Rolster Arrows as their new starting top laner on October 7th, 2013.
The Arrows qualified for HOT6iX Champions Spring 2014 where they upset SK Telecom T1 K to place first in their group. Unfortunately, they lost in the quarterfinals 3-1 to CJ Entus Blaze. The Arrows then attended HOT6iX Champions Summer 2014 where they beat the favorites, Samsung Blue, 3-2 to win the tournament. Next, they attended the 2014 Season Korea Regional Finals where they were swept in the second round by NaJin White Shield, narrowly missing Worlds.
With the changes to the OGN rules, the Arrows and the Bullets merged to create KT Rolster and ssumday was made the starting top laner. KT participated in SBENU Champions Spring 2015 and placed 5th, narrowly missing playoffs. KT placed second overall during the regular season of SBENU Champions Summer 2015. They made it to the finals of the playoffs but lost 3-0 to SK Telecom T1. KT earned enough circuit points to qualify for the 2015 Season Korea Regional Finals where they beat the Jin Air Green Wings 3-1 in the finals to qualify for the 2015 Season World Championship. KT was drawn into a group with LGD Gaming, Team SoloMid, and Origen. They ended with a 5-1 record and went on to play the KOO Tigers in the quarterfinals. Unfortunately, they lost 3-1 and were knocked out of the tournament.
KT played in the 2015 LoL KeSPA Cup where they lost 2-1 in the semifinals to CJ Entus.
During the LCK 2016 Spring Season, KT Rolster finished second place in the regular season with a 13-5 match record. Ssumday was second place in MVP voting with 1100 points behind Smeb. Their regular season placement earned them a bye into the semi-finals of the Spring Playoffs, where they faced SK Telecom T1. Unfortunately, they were swept 3-0, ending their spring split with a third place finish.
During the 2016 LCK Summer Split, KT Rolster claimed third place in the regular season with a 13-5 series record, losing to SK Telecom T1 based on game score. This seeded them into the 2nd round of the 2016 LCK Summer Playoffs, where they met Samsung Galaxy. KT had yet to drop a game to Samsung since the start of Season 5's LCK era, and this trend continued as they swept them 3-0. In the semifinals, they met SK Telecom T1 in the Telecom Wars, and this time they managed to reverse sweep them 3-2 to move onto the finals. In an epic set against the ROX Tigers, KT Rolster barely lost 3-2, losing out on Korea's first seed at Worlds, but giving them the highest seed for the Korea Regional Finals 2016. In a rematch against Samsung Galaxy where KT were heavily favored to make it out, Samsung managed to break a 19 game losing streak against KT to win the set 3-2 and take Korea's third seed, ending KT Rolster's season early.