Smith made 13 appearances as a freshman, mostly midweek starts. He was 2-3 with a 5.80 earned run average a year ago.
UT-Martin was swept at Southeastern Louisiana over the weekend and played at home against Southern Illinois Tuesday afternoon.
Ole Miss moved to No. 8 in the Baseball America rankings after a three game sweep of TCU.
The Rebels defeated UT Martin 20-4 in a single game last season.