Because Akhmat is a very common name. There were many Akhmatov, the name does not distinguish one person from many, even only from many famous people.
For example, my name is Nikolay, and in Ukraine there is a city of Nikolaev, and this does not mean that the city is somehow connected with me.
Because the Horde Khan Akhmat loved to play football. It happens, it happens, in a clear field, knead the boots, but there is no team ... and there is no stadium ... and there is no ball ... Boredom!
FC "Terek" (Grozny) was renamed "Akhmat" not in honor of the Horde Khan. It was named after Akhmat Kadyrov, the first president of the Chechen Republic, father of the current president, Ramzan Kadyrov. The football stadium where the team from Grozny plays their matches is called "Akhmat-Arena". Akhmat Kadyrov died on May 9, 2004 as a result of a terrorist attack at the Dynamo stadium in the city of Grozny. Shamil Basayev claimed responsibility for the attack.
Akhmat Kadyrov was a very controversial, extraordinary personality. There will be time to read about it.