A long-winding and challenging path to recovery for Tampa Bay Rays’ lefty Shane McClanahan experienced another positive development. On Tuesday, the Rays sent McClanahan on a rehab assignment to their Florida Complex League affiliate in Port Charlotte, Fla. He pitched the first inning, allowing one walk and getting three outs, including a strikeout to end the inning. The move is indicative of McClanahan’s progression toward returning from a left triceps nerve irritation injury he suffered in his final exhibition start on March 22 against the Boston Red Sox.