The 2019 NFL draft wrapped up April 27, but teams' additions of rookie prospects didn't end then. Squads have been adding undrafted free agents ever since and will likely continue to do so throughout the offseason.
There's a good reason why undrafted free agents are a big part of a draft class and shouldn't be overlooked. Several wind up making rosters every year, and some even become stars. Take former Pittsburgh Steelers linebacker James Harrison, for example. He went undrafted back in 2002, had a 15-year career and was responsible for one of the most memorable plays in Super Bowl history.