sentences:  He scored a late-season century against Warwickshire in the County Championship, but in a season in which Somerset struggled against relegation, he scored a relatively modest 606 first-class runs at an average of 31.89.At the end of the season, Buttler, whose contract with Somerset had expired, announced that he was joining Lancashire, leaving Kieswetter as the clear first-choice wicket-keeper at Somerset.Kieswetter signed with the Brisbane Heat for the 2013–14 Big Bash League.