He registered 29 receptions, 510 receiving yards, 4 touchdowns as a tight end and 67 tackles, 10 sacks as a linebacker.
As a sophomore, he snapped to Ray Guy Award finalist and All-American punter Hayden Hunt, who finished fifth nationally with a 46.0 yards per punt average.
Sieg was signed as an undrafted free agent by the Baltimore Ravens after the 2018 NFL draft on April 29.
[5] On September 12, 2018, Sieg was signed by the Oakland Raiders to replace long snapper Andrew DePaola, who was lost for the year with a right knee ACL injury.
[9] He helped Carlson set franchise-records with 144 scored points and a 94.3 field goal percentage during the season.
On March 19, 2023, Sieg was released after the Raiders acquired long snapper Jacob Bobenmoyer, who reunited with special teams coordinator Tom McMahon.
On March 22, 2023, Sieg was signed by the Dallas Cowboys, to replace Jake McQuaide who left in free agency.
[14] He had 2 special teams tackles and was a key part of the field goal unit, contributing to first-year kicker Brandon Aubrey setting multiple NFL and franchise records.