The second head coach in the history of the program, Seaman holds a 44-13 record and a 19-3 mark in Wolverine-Hoosier Athletic Conference (WHAC) games, and was named the WHAC Coach of the Year following the 2017 season. Under his tenure he has coached 15 All-WHAC selections, seven NAIA All-Americans, 12WHAC All-Academic Team honorees, three NAIA Scholar-Athletes, 11 WHAC Player of the Week winners (six Offensive, five Defensive), seven NAIA National Player of the Week winners (four Offensive, four Defensive), one WHAC Offensive Player of the Year, two WHAC Defensive Player of the Year selections and two CoSIDA Academic All-America Team recipients.

The Warriors 2020 season was cut short due to the COVID-19 pandemic. Tech went 3-1 in the shortened season, but had program history take place as Jordan Reyes and Evan Schuster were named to the CoSIDA Academic All-America At-Large Team, the first players in program history to earn a spot on the prestigious team.

In 2019 Tech went 16-3 and 7-1 in conference play, recording program records for both regular season and conference wins, while sweeping the WHAC regular season and tournament titles for the first time in program history. The Warriors rose as high as number three in the NAIA Coaches' Top 25 Poll and knocked off #1-ranked University of the Cumberlands on March 3 for the first win over the number-one ranked team in program history. The Orange and Black earned an automatic bid to the NAIA National Invitational for the third straight season and advanced to the semifinals before falling to WHAC Co-Champions and eventual national runner-up, Aquinas.

In 2018 he guided the Warriors to a 13-3 record and a 6-1 mark in conference play, and rose as high as second in the NAIA Coaches' Top 10 Poll. Tech finished second in the WHAC, with its lone blemish coming to undefeated Madonna. The team received an at-large bid to the NAIA National Invitational where they advanced to the semifinals before falling to eventual champion Reinhardt.

Seaman led the Orange and Black to a 12-6 overall record in 2017 with a 6-1 mark in WHAC play to capture the programs first-ever regular season championship and earning Coach of the Year honors in his first season at the helm.