Messi started his first match in six rounds because of a recurring right hamstring injury .
Messi left the field in the 68th minute with Barcelona trailing 1 - 0 to Radamel Falcao 's 52 - minute goal and having made all three substitutions .
Messi started his first match in six rounds because of a recurring right hamstring injury , but he left the field in the 68th minute with Barcelona trailing 1 - 0 to Radamel Falcao 's 52 - minute goal and having made all three substitutions .