5 position battles to watch in OTAs: No. 4 -- LB

The Titans used a second-round pick on LB Zach Brown, but he isn't a lock to be the opening week starter at weakside LB. Brown will compete with veteran LBs Will Witherspoon and Gerald McRath. Witherspoon has recorded at least 100 tackles in six of 10 seasons, but had a career-low 62 in 2011. McRath battled several injuries last season.