Tomas "oskar" Stastny will be moved back to mousesports' starting roster after spending the last four months on the team's bench, the organization announced Sunday.

Oskar will be replacing Chris "chrisJ" de Jong as the team's AWPer. chrisJ was the longest serving member of mouz, having joined the team in October 2013.

"Chris is a long time friend and the best roommate I had on the circuit," mouz captain Nikola "NiKo" Kovac said in the press release. "We are all very close in the team and we believed that our chemistry would carry us but it could only take us that far. So obviously this is tough for all of us. The new team will be hungry for success. I want to apologise to all of our fans for the bad performance at the major. We are going to start over and get results in as quick as possible."

In the press release, chrisJ said the decision to swap him with oskar came as a shock, but it’s a decision he understands. The team recently placed 12th-14th at the ELEAGUE Major after finishing the group stage 3-1, with losses to Natus Vincere, Fnatic and Team Liquid. Mouz qualified for the Major by placing 3rd-5th in the offline qualifier.

“The core of the lineup has tried many different things for a long time and it just never seemed to work as much as we all wanted,” chrisJ said in the press release. “I would like to wish the guys the best of luck for the upcoming Katowice qualifier and Dreamhack Las Vegas. Personally, I hope to prove myself again in the future. I am still very motivated to play and will certainly not give up on the game.”

oskar was benched in October, with the team citing “personal issues” for the decision. Oskar himself made a statement on Facebook where he said he felt himself “slowing down the team,” and that he was unable to keep up with practice. Since then, oskar has stood-in for PENTA Sports during the ESEA Pro League relegation matches earlier this month.

“I feel great. I fixed a lot of things in my private life and I'm finally ready to play CS on a top level again,” oskar said in the press release. “I was waiting for another opportunity and I was constantly working on my skills.”

Mouz’s new starting roster will debut at the IEM Katowice qualifier on Feb. 4.

Daniel Rosen is a news editor for theScore esports. You can follow him on Twitter.