Arthur Rinderknech

The provided news articles focus on Daniil Medvedev's defeat by Matteo Berrettini at the Monte Carlo Masters. Arthur Rinderknech is not mentioned in either article. Therefore, it's impossible to provide a summary about him based on the given information. The articles detail Medvedev's poor performance and frustration during the match, leading to him smashing his racquet. Berrettini's victory is highlighted as a significant upset, given Medvedev's higher ranking. The articles do not offer any context or information related to Arthur Rinderknech.