Roberson was able to manage only one hit Wednesday afternoon in its second loss of the season, a 5-0 shutout at the hands of Huntsville (Ala.) in the USA Baseball National High School Invitational.
Freshman Garrett Blaylock had the hit, while Chris Barnwell and Braxton Davidson had two walks apiece. But the Rams (7-2) could not push a run across against Huntsville starter Whitt Davis.
Roberson pitcher Marshall Beachboard had seven strikeouts. The Rams are No. 8 in this week's MaxPreps top-25 rankings.
The NHSI runs through Saturday and is being held at the USA Baseball team's training complex in Cary.