The Atlanta Braves are going to be without two key members of their lineup for longer than they had hoped. Manager Walt Weiss said Tuesday afternoon that catcher Sean Murphy would likely need at least eight weeks, if not more, to recover from his latest injury.  He w ent on the 10-day injured list earlier in the day with a fractured left middle finger. He was 1-for-14 with six strikeouts in his brief return to the lineup. Sandy Léon has been brought back to fill in as a backup behind Drake Baldwin. He was signed to a major league contract. He had been previously released from his minor league contract to play baseball down in Mexico. Meanwhile, Ronald Acuña Jr. isn’t expected to be back when he is eligible to be activated from the injured list. Weiss said that while he’s progressing, it’s going to be a bit longer. They'll see where he's at on the other side of the homestand. He’s eligible to be activated on Wednesday and has been out with a Grade 1 left hamstring strain.…