As the offseason progresses, rookie draft picks are getting their chance to show their teams exactly what they paid for. But the draftees aren’t the only ones competing for roster spots, as teams bring in undrafted free agents to battle as well.

In recent years, the Seahawks have been particularly good at finding productive players outside of the draft, for instance, Ricardo Lockette, DeShawn Shead, and Jermaine Kearse. But this trend stretches back much earlier in the franchise, so here’s a look at some of the best undrafted free agents in Seahawks history.

David Krieg

Dave Krieg joined the Seahawks as an undrafted free agent in 1980, landing the third-string job after a tryout. He played sparingly until 1984 when he got the nod to start and had a breakout season. Star running back Curt Warner suffered an injury, which forced then-coach Chuck Knox to abandon his run based attack. Krieg thrived, throwing for 3,671 yards and 32 touchdowns, leading the Seahawks to a 12-4 record. Krieg started 119 games for the Seahawks over the course of his career.

Doug Baldwin

After leading his Stanford team in receiving yards and touchdowns, Baldwin went undrafted in 2011, before he was signed to a three-year deal by the Seahawks following the end of the lockout. As a rookie, he led the Seahawks in both receiving yards and receptions. His numbers dropped in his sophomore year, but have improved in each of the past four seasons. In 2015 he set a franchise record for most touchdowns in a single season with 14. He tied another franchise record in 2016 with 94 receptions on the year. He has a combined 2,197 yards and 21 touchdowns in the last two seasons.

Jon Kitna

Kitna was a homegrown product, growing up in Tacoma and playing for Central Washington University before signing with the Seahawks. He led Central to a NAIA National Championship, throwing for 42 touchdowns on the season. A Seahawks coach saw Kitna while at Central to scout another player, signed him to a contract and brought him to training camp. He was then sent by the team to NFL Europe, where he lead the Barcelona Dragons to a World Bowl victory and was named MVP. He came back to Seattle where he started for two years before moving on to the Bengals. He saw his best season in 1999 when he threw for 3,346 yards and 23 touchdowns.

Jim Zorn

Zorn was originally signed as an undrafted free agent by the Cowboys, but was cut before the 1975 season and sat out the year before the Seahawks signed him in 1976. Zorn came to prominence in Seattle with Hall of Fame wide receiver Steve Largent. Largent was also the first inductee into the Seahawks’ Ring of Honor, with Zorn being the second. Zorn was named the Offensive Rookie of the Year in 1976, the inaugural year for the Seahawks franchise. At the time, his three consecutive 3,000-yard seasons were a first for the franchise, as well as throwing back-to-back 300 yard games. Zorn was known for his ability to scramble and work outside of the pocket. He rushed for 17 touchdowns with the Seahawks.

Eugene Robinson

Robinson came to the Seahawks undrafted in 1985 and played 11 seasons for the team. He was named to the Pro Bowl in 1992 and 1993 and was an All-Pro in 1993, the same year he led the league in interceptions. He started 170 games for the Seahawks and over the course of his career, racked up 1,415 tackles and 57 interceptions.