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​Søren Bjerg (born February 21, 1996), known by his in-game name Bjergsen, is a Danish League of Legends player who is the Mid Laner for Team SoloMid, of the North American League of Legends Championship Series (NA LCS).

Bjergsen was the MVP of the 2015 NA LCS Spring Split, which TSM also won. He was also named MVP for the 2016 NA LCS Summer Split.

During the Season 3 European League of Legends Championship Series (LCS), Bjergsen was unable to play with Copenhagen Wolves Week 3 due to age restrictions put in place by Riot Games.

For the first two weeks, he was temporarily replaced by the team’s sub cowTerd. After he turned 17 years old on February 21, he was able to rejoin the main lineup and play their remaining LCS matches.

After finding success with CW after his rejoining, his team was acquired by and rebranded as Ninjas in Pyjamas (NiP) for the Summer LCS.

On November 2, 2013, Bjergsen left NiP to move to North America and joined Team SoloMid as their mid laner.

He was the 2nd player to cross over from the EU to NA LCS, after Edward left Gambit Gaming to join Team Curse during Season 3.

On January 23, 2014, Riot Games announced that Bjergsen violated the LCS rules by approaching and encouraging a contracted LCS player to leave his position at Lemondogs.

He admitted the violation and was fined $2,000.
Bjergsen won the Most Valuable Player Award at the conclusion of the 2015 North American LCS Spring Split.

TSM qualified for the 2015 League of Legends World Championship.

At Worlds TSM came last in their preliminary group with a record of 1–5, eliminating them from the bracket stage.



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In recent games, Bjergsen seemed to have been converted to the G502 from the G500S after his teammates continued to use the mouse.  The G502 is by the far the most popular model in the LCS at this time and it currently is the only mouse that TSM main roster is using.

The Proteus Core makes smart design choices at every possible opportunity, offering a comfortable experience for players who use a palm grip and an exceptional one for players who use a claw grip.

The mouse itself is rather small and low in profile. Both the small thumb rest and the grip for the two outermost fingers are textured, providing both stability and a pleasant tactile sensation.

With 11 programmable buttons, the Proteus Core is neither minimalist nor excessive. The peripheral has a left mouse button, a right mouse button, a scroll wheel that clicks in three directions, two dots-per-inch (DPI) sensitivity buttons near the top, one button below the scroll wheel and three thumb buttons.

There is also a nonprogrammable button beneath the scroll wheel that adjusts the wheel’s friction.

When earlier reviewed the G500s, one of the biggest complaints was that the scroll wheel felt loose and flimsy, even when we pressed the button to give it additional resistance. Logitech has addressed this concern on the Proteus Core.

The free-scrolling mode is still available, but the scroll wheel becomes rock-solid upon pressing the button, with resistance to spare.

Its ridged design is both comfortable and effective.
Otherwise, Logitech arranged the buttons on the Proteus Core in a very smart layout.

The thumb buttons are large and distinctive, and the lowest one is ideally situated for a “sniper” button that lowers DPI — a useful feature in first-person shooters.

The DPI buttons, located next to the left mouse button, are both remote enough to stay out of the way and large enough to press easily without looking.

Palm players with large hands may find the Proteus Core a bit small for their tastes. Otherwise, it’s hard to see how Logitech could have devised a better all-purpose gaming mouse design.

The Proteus Core runs on the same Logitech Gaming Software as all other modern Logitech mice.

While this software lagged behind the comparable Razer Synapse software a few months ago, it has really come into its own in the interim.

The Proteus Core can store three profiles internally, or a virtually unlimited number of profiles on a computer. One of the best features of the Logitech software is its ability to scan your PC, determine which games you have installed and automatically create profiles for them.

From there, customizing the profiles is simple. Simply click on a command (the profiles use game-specific commands, such as Grapnel Gun for “Batman: Arkham City” or Attack-Move for “StarCraft II”) and drag it onto the desired button. The software will automatically apply the profile as soon as the game launches.

Users can also create macros, control the mouse’s illumination and adjust the DPI range. The mouse ranges from 200 up to an unprecedented 12,000. Out of curiosity, we tried the 12,000 DPI, and found it far too sensitive to be of much use.

Even so, the option to even go that high is something users won’t find in any other gaming mouse.



The Proteus Core boasts two other innovative features:

a surface-testing capability and an adjustable weight system. By testing the surface you use for the Proteus Core, users can optimize anything from a high-end mouse pad to a sheet of paper. (We tried both, as well as a standard office desk, with impressive results.)

The G500s had adjustable weights, but the Proteus Core refines this feature.

Rather than an ejectable canister as on the G500s, the Proteus Core has a magnetic door on its underside, hiding spots for five 3.6-gram weights.

Gamers select not only how much weight to add, but where to add it. This provides very granular control over the feel of the mouse, as adding weight to the center of the mouse can feel very different from adding it to the back.