Echo Fox will make sweeping changes to its League of Legends team ahead of the North American League Championship Series roster lock on Tuesday evening, sources close to the team told ESPN.

The team has terminated the contract of mid laner Kim "Fenix" Jae-hun and intends to release AD carry Johnny "Altec" Ru and support Adrian "Adrian" Ma from its League Championship Series roster, sources said. The team will promote currently rostered mid laner Tanner "Damonte" Damonte and AD carry Lawrence "Lost" Hui to the starting positions, according to sources.

According to sources, the team is also working on a deal to acquire support Andy "Smoothie" Ta from Cloud9, but no buyout has been finalized at this time.

Echo Fox and Cloud9 declined to comment.

Smoothie was benched from the Cloud9 starting roster in June but has since split starting role time with Tristan "Zeyzal" Stidam.

On Tuesday at 8 p.m. ET, Riot Games will lock rosters for all North American League Championship Series teams.

This summer, all of the league's teams -- in part due to in-game meta changes that swap role responsibilities substantially -- sit within three games of first place and last place. Echo Fox, with a record of 6-4, is tied in first place with 100 Thieves, Team Liquid and FlyQuest. The last-place team, Cloud9, holds a record of 3-7.

The changes are not the first for Echo Fox this summer. In late June, the team began using substitute Wang "Feng" Xiao-Feng in place of Adrian. It has since gone even, with a 4-4 record. It has also rotated Damonte into the mid lane in place of Fenix. In April, Echo Fox placed third overall in the North American League Championship Series spring split after defeating Clutch Gaming in the third place match in Miami.