The Pittsburgh Steelers filled the two open spots on their practice squad on Tuesday as defensive back Mike Hilton and outside linebacker linebacker Shaquille Riddick were both signed.

Hilton entered the league this year as an undrafted free agent out of Mississippi with the Jacksonville Jaguars. He recorded 225 total tackles during his four seasons at Mississippi and had 6 interceptions. According to his college bio, Hilton started at every position in the defensive backfield during his college career.

At his pro day, Hilton reportedly measured in at 5086 and weighed 178-pounds. He did 13 reps on the bench and ran the 40-yard-dash in 4.55 seconds.

As for Riddick, he was originally drafted by the Arizona Cardinals in the fifth-round of the 2015 NFL Draft out of West Virginia. In his one season at West Virginia he recorded 27 total tackles and that included 7 sacks.

At his 2015 pro day, Riddick reportedly measured in at 6057 and weighed 244-pounds. He did 19 reps on the bench and ran the 40-yard-dash in 4.64 seconds.

The Steelers also reportedly worked out free agent linebacker Davis Tull on Tuesday, according to Adam Caplan.

In essence, the Steelers replaced cornerback Al-Hajj Shabazz and linebacker Travis Feeney with Hilton and Riddick. Shabazz was claimed off waivers recently by the Houston Texans while Feeney was signed by the New Orleans Saints off the Steelers practice squad last week.