Kevin Greene was the second free agent ever signed by the Steelers, making the move from the Los Angeles Rams in 1993. In his three seasons with the Steelers he had 35.5 sacks and two Pro Bowl selections and was named AFC Linebacker of the Year by the NFLPA in 1994.

Greene, who left after the 1995 season, was voted in as a member of the Pro Football Hall of Fame Class of 2016. Signing a future Hall of Famer as a free agent definitely ranks as a good move.

Jeff Hartings – Center

The center position is one steeped in tradition in Pittsburgh, with Hall of Famers Mike Webster and Dermontti Dawson setting the standard. So when Jeff Hartings signed with the Steelers in 2001 from the Detroit Lions, the pressure was on for him to live up to the standard.

Hartings, a former No. 1 pick of the Lions who had only played guard, had blocked for a Pro Bowl running back in Detroit in Barry Sanders. When he came to Pittsburgh he moved to center and blocked for soon to be Hall of Fame inductee Jerome Bettis. And he did it in a way that would make his predecessors proud.

Kimo von Oelhoffen – Nose Tackle/Defensive End

When Kimo von Oelhoffen signed with the Steelers in 2000, he arrived as a nose tackle. After one season he was switched to defensive end, where his impact was felt immediately. He played six seasons with the Steelers, including 2005 when the Steelers won Super Bowl XL.