This is the 10106th most frequent Russian word.
баскетболисты
Basketball players.
In this sentence, the word 'баскетболистов' is used in the genitive plural, which indicates possession or a fixed number of individuals.
В команде пять баскетболистов.
There are five basketball players in the team.
Here, 'баскетболисты' is used in the nominative plural, signifying the subject of the sentence who is performing the action.
Юные баскетболисты тренируются каждый день.
Young basketball players train every day.
In this context, 'баскетболисты' is again in the nominative plural, describing a group as the subject of the action described.