LSU quarterback Myles Brennan suffered a left-arm injury, which will require surgery.ESPN was told by sources that Brennan may have a broken arm. His return date is not known.Brennan started last season as the starter and threw for 11 touchdowns in just three games before an injury to his abdomen ended his season.Brennan, a fourth-year junior, said this offseason that he felt 100 percent. Max Johnson was his opponent and Brennan was expected to challenge him for the job.Johnson, who is the son of Brad Johnson, an ex-NFL quarterback, joined LSU as a freshman and led LSU to a record of 2-0.Johnson was able to throw for six touchdowns and one interception in those victories against Ole Miss and Florida.Ed Orgeron, SEC media day coordinator, stated that he believed Johnson and Brennan were champion quarterbacks.Orgeron stated that "whoever wins is going to do an amazing job at LSU." "It's going be a huge battle, and we will see what happens."LSU will open the UCLA season on September 4.