Rookie Max Stassi became the second Astros catcher in four days to land on the seven-day concussion disabled list Friday prompting the club to call minor-league veteran Cody Clark to the majors. “Stassi is here today” general manager Jeff Luhnow said. “We’re obviously pleased that he doesn’t have any fractures but any time you get hit in the head and have symptoms of a mild concussion you have to be careful.” Clark who signed a minor-league contract with the club this spring was added to the 40-man roster on Friday after his contract was purchased from Class AA Corpus Christi. Stassi had been called up to the majors Tuesday because backup Carlos Corporan suffered a concussion Monday night when the Texas Rangers’ Alex Rios tipped a ball back off his forehead. Two days later Stassi was hit in the face by Rangers reliever Tanner Scheppers. Stassi 22 was somewhat fortunate that he turned away from the pitch which hit his shoulder before it bounce off his face and nose. He plated his first major league RBI on the hit by pitch to tie the score at 4 in the eighth inning of the eventual 5-4 loss.