José Raúl Capablanca
During these triumphs Capablanca began to experience debilitating symptoms of hypertension. and could only finish seventh of the eight players at the 1938 AVRO tournament, an élite contest designed to select a challenger for Alekhine's world title. Capablanca's high blood pressure was not correctly diagnosed and treated until after the AVRO tournament, and caused him to lose his train of thought towards the end of playing sessions.