They go by a dozen different nicknames- rock stars, superstars, overachievers, A-players, etc. But regardless of the name or definition, any good leader can tell you which team members are high performers and which are not. High performers are exciting. They stand out. They are the people you go to when you need a last minute sale, are faced with an impossible deadline, or need a presentation that will dazzle a client. They set the bar for excellence on your team. But they’re also trouble-makers in an organization. Here are 7 ways that High Performers create problems for managers: