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Başakşehir suffered an unexpected 4-0 loss against Kasımpaşaspor on Feb. 12, making it miss its chance to climb back to the top of the Spor Toto Super League standings and failing to capitalize on its closest rival's loss.

Beşiktaş, which suffered a 2-1 shock defeat at Karabükspor's field on Feb. 10, remained atop the standings, two points ahead of Başakşehir.

Turkish Super League leader Beşiktaş will try to redirect its focus to the league following a traumatic loss against archrival Fenerbahçe last week, when it visits a tough Kardemir Karabük on Feb. 10.

Beşiktaş chairman Firket Orman has "apologized for any wrongdoings" committed by his club during the Feb. 5 Ziraat Turkey Cup game against Fenerbahçe, which was marked by brawls and on-pitch violence. 

"I apologize to everyone for our wrongdoings in the derby," Orman said on Feb. 7 at a ceremony marking a new jersey deal with Vodafone. 

Fenerbahçe eliminated Beşiktaş in the Ziraat Turkish Cup last 16 late on Feb. 5 1-0 in a tense game marked by brawls.

A well-motivated Turkish Spor Toto Super League leader Beşiktaş will take on archrival Fenerbahçe on Feb. 5 in a Ziraat Turkey Cup last 16 stage "do or die" game. 

Beşiktaş, which climbed to the top of the standings on matchday 18, put five goals past a strong Konyaspor on Jan. 30 to maintain a two-point cushion over Medipol Başakşehir.

The second half of the Spor Toto Super League season starts with surprise package Başakşehir atop the standings, but the Istanbul club's coach is refusing to discuss his side's title chances.

Unbeaten Başakşehir leads the league with 10 victories from 16 games, one point ahead of Beşiktaş on 35 points.

Beşiktaş suffered its first defeat of the Spor Toto Super League season on Dec. 17, losing 2-1 at tiny city rival Kasımpaşa.

With the loss, Beşiktaş fell three points behind leader Başakşehir, which maintained its unbeaten record with a 1-0 home victory over Trabzonspor earlier in the day.

An Istanbul derby between Fenerbahçe and Beşiktaş in the Spor Toto Super League ended in a goalless draw late on Dec. 3, with the visiting side Beşiktaş maintaining its unbeaten record this season in all competitions.

Spor Toto Super League leader Medipol Başakşehir refused to allow Beşiktaş to overtake it atop the table in an exciting draw between the top flight's last two unbeaten teams during a Nov. 26 match at Beşiktaş's Vodafone Arena.

"We are sad that we missed out on the win but happy to keep the lead," said visiting Başakşehir coach Abdullah Avcı after the game.

Turkey's Beşiktaş will put its unbeaten record in the Champions League on the line on Nov. 23 when it hosts Portugal's Benfica at its Vodafone Arena Stadium.

Beşiktaş is just a point adrift of the top pair, Benfica and Napoli, heading into the last two matchdays in the group.