https://bleacherreport.com/articles/2786642-dennis-schroder-trade-rumors-3-point-shooting-atrocious-defense-hurt-value
The Atlanta Hawks are reportedly struggling to find a trade market for point guard Dennis Schroder because of his inefficient three-point shooting and "atrocious defense."
https://hoopshype.com/2018/01/18/atlanta-hawks-dennis-schroder-analysis-offense-defense/
However, Schroder has remained a defensive liability for the Hawks. His defensive rating on ESPN’s Real Plus-Minus is behind every point guard in the NBA besides Emanuel Mudiay.
Atlanta has allowed 111.3 points per 100 possessions when he is on the court, which is the most out of anyone on the squad. His block rate (2.6 percent) is the second-lowest in the league among those who have played as many minutes.
Opposing shooters have had significantly more success when he is guarding them. The difference in field goal percentage on shot attempts less than 10 feet from the basket when he is their defender compared to when he is not is worse than all but all but one player in the league.
Sounds like he belongs to the Jabari Parker school of appreciating defense.