Mar. 25, 2016 9:33 AM PT10:33 AM MT11:33 AM CT12:33 PM ET16:33 GMT12:33 AM 北京时间9:33 AM MST11:33 AM EST10:33 AM CT20:33 UAE12:33 ET15:33 - The Pittsburgh Steelers have signed Johnson to a one-year deal, giving the club depth at one of their most important positions heading into 2016. Analysis: The 27-year-old Johnson is entering his fifth NFL season. He made the Denver Broncos as an undrafted rookie free agent in 2012 and played with the Broncos through 2014 before spending last season with the Tennessee Titans. Primarily used on special teams, Johnson has appeared in 57 games during his career, with seven starts.