1. The current skill level is lower than the upper limit of skill level.
2. Have enough gold coins to upgrade your skills.
3. There are enough players to train self-built players to gain skills upgrading experience.
First, open the skills interface in the lobby.
How to upgrade the skills of NBA2K online and how to use the NBA2K online skill level breakthrough card?
In the red area, you can see whether the skills can be upgraded. If the skill level has reached the upper limit, you need to use the skill level breakthrough card to upgrade the skill level upper limit. This is where the skill breakthrough card is used.
The yellow area indicates that the skill experience and gold coins are insufficient. Experience requires players to train self-built players in the green area to gain experience, and training will reduce the ownership time of self-built players.