Andre Agassi couldn’t wrap his head around Matteo Arnaldi withdrawing from the French Open semifinals, so instead he buried his hands in his face. Arnaldi withdrew from facing Flavio Cobolli just 25 minutes before the players were due on the court at Roland Garos. The world’s No. 104-ranked player and a Cinderella semifinalist cited a viral illness. Host Adam Lefkoe broke the stunning news to the television panel of analysts live and Agassi’s hands-to-face reaction showed his disbelief. “