NEW YORK (Reuters) - The Pittsburgh Steelers have acquired veteran quarterback Byron Leftwich from Tampa Bay, the NFL club said on Tuesday, in a move providing insurance for the possible loss of Ben Roethlisberger for the start of the season.

Pittsburgh sent a seventh-round pick in this week's NFL Draft to the Buccaneers in exchange.

Roethlisberger could face a suspension for violating the league's personal conduct policy even though charges were not filed against him after allegations of a sexual assault were made by a 20-year-old college student in Georgia.

Leftwich, 30, played with the Steelers in 2008, completing 21 of 36 passes for 303 yards and two touchdowns.

(Writing by Larry Fine, Editing by Ian Ransom)