CHICAGO — Legendary Cubs slugger Sammy Sosa returned to Wrigley Field for the first time in over 20 years before a game against the Seattle Mariners, where he was greeted by owner Tom Ricketts. Now 56 and set for induction into the Cubs’ Hall of Fame, Sosa, a seven-time All-Star with 545 home runs, acknowledged past mistakes regarding performance-enhancing drugs during his career.